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Customer Ratings & Reviews

Your price for this item is $218.99
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The comparable value price is $229.99

Customer reviews

Rating 4.7 out of 5 stars with 1317 reviews

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Rating by feature

  • Value

    Rating 4.4 out of 5 stars

  • Quality

    Rating 4.8 out of 5 stars

  • Ease of Use

    Rating 4.8 out of 5 stars

Pros mentioned filter

Cons mentioned filter

95%would recommend to a friend

Customers are saying

Customers find value in the DiamondClean Smart 9300's superior cleaning capabilities, user-friendly app, and long-lasting battery life. Many appreciate the toothbrush's design and ease of use, though some express concerns about the high price point. A few users also mentioned issues with charging and the travel case.

This summary was generated by AI based on customer reviews.

The vast majority of our reviews come from verified purchases. Reviews from customers may include My Best Buy members, employees, and Tech Insider Network members (as tagged). Select reviewers may receive discounted products, promotional considerations or entries into drawings for honest, helpful reviews.
Page 7 Showing 121-140 of 1,317 reviews
  • Pros mentioned:
    Battery life

    Rated 5 out of 5 stars

    Awesome toothbrush

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    Posted . Owned for 1 year when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    My wife absolutely loves it, she had this for over a year now and it has not let her down! Fast charging, long battery and reasonably priced replacement heads

    I would recommend this to a friend
  • Pros mentioned:
    Cleaning

    Rated 5 out of 5 stars

    Electric toothbrush

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    Posted . Owned for 7 months when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Best purchase for my teeth. Brushing is fun and the cleanliness is remarkable. Dentist recommended

    I would recommend this to a friend
  • Pros mentioned:
    Toothbrush

    Rated 5 out of 5 stars

    great toothbrush

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    Posted . Owned for 3 weeks when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    very high quality toothbrush, very easy to use and setup

    I would recommend this to a friend
  • Pros mentioned:
    App

    Rated 5 out of 5 stars

    Great investment

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    Posted . Owned for 7 months when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    I have been using Sonicare for the last decade per the recommendation of my dentist. When my previous one died I decided to upgrade. Definitely happy with results. Technology has advanced considerably and the new app helps with everything including sending stats to your provider. A drastic difference from an average toothbrush. Convinced my friend to purchase one too.

    I would recommend this to a friend
  • Pros mentioned:
    Toothbrush

    Rated 5 out of 5 stars

    Best. Brush. Ever

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    Posted .
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    This was a replacement brush from the dinosaur toothbrush my ex gave me. Yeah she gave me a toothbrush??? Anyways, this prompted me to find a better electric toothbrush and I did. Sonic Care allows you to follow your daily brushing techniques and coaches you on better brushing patterns. They give you two additional brushes to the regular clean brush head. Come with a nice case for traveling. Recommend using Sensodyne toothpaste.

    I would recommend this to a friend
  • Pros mentioned:
    Cleaning, Toothbrush

    Rated 3 out of 5 stars

    Expensive but does the job

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    Posted . Owned for 3 weeks when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    This “toothbrush” is very expensive but it does a good job of cleaning and guides you to make sure you are thoroughly brushing your teeth. There are multiple brush heads, which is both good and bad as it may be a little too sophisticated for its own good. A couple weeks in and one of the programmed cleaning cycles is not working the same as it did before. I have tried removing then replacing the brush head thinking the handle will self-correct by auto selecting the brush head, but that has not worked either.

    I would recommend this to a friend
  • Rated 5 out of 5 stars

    Excellent Toothbrush, works well for whitening.

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    Posted . Owned for 2 months when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    I've been using Sonicare toothbrushes for about 20 years now, and bought this one as an upgrade to my last model, which I'd has since 2013 (I think). I MOSTLY bought this one because of the color. LOL The b lack just matched my decor better. Plus my old brush used the older model replacements which are getting harder to find. I was a little apprehensive to drop this much money on a toothbrush as I didn't really care about any of the "smart" features. But after setting it all up (which was super easy) I really love it! I actually enjoy tracking my brushing habits in the app, and the timer that tells you when to switch to different sections of your mouth is helpful. This brush seems more "powerful" than my older model, but still comfortable to use. I like the travel case and charging base that is included, and all the different brush heads. But the biggest reason I love this brush is the results! I drink a pot of coffee a day and am an ex-smoker. I've been using the White+ mode and I have seen a notable difference in the appearance of my teeth. Something I was not really expecting. I've been using the same whitening toothpaste I've always used with my past Sonicare, but after switching to this brush with the White+ mode, I have seen a real difference! Highly recommend.

    I would recommend this to a friend
  • Pros mentioned:
    App

    Rated 5 out of 5 stars

    Great purchase

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    Posted . Owned for 2 weeks when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Fantastic brush. Very good app. Love the color and design.

    I would recommend this to a friend
  • Pros mentioned:
    Cleaning

    Rated 5 out of 5 stars

    For a fresh-from-the-dentist kind of clean!

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    Posted . Owned for 3 weeks when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    This toothbrush has spoiled me for others because once you experience the clean feeling from this unit, you will never feel like any other brush measures up.

    I would recommend this to a friend
  • Pros mentioned:
    Toothbrush

    Rated 5 out of 5 stars

    Toothbrush feview

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    Posted . Owned for 3 weeks when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    I bought this for my son who researches everything and he was set on getting this item for Christmas. Well he is very pleased with the toothbrush so far and we would definitely make the purchase again. I thought it would be crazy to spend so much on a toothbrush but if it saves money and time on dentist’s appointments then it will be worth it.

    I would recommend this to a friend
  • Pros mentioned:
    App

    Rated 5 out of 5 stars

    Best Electric Toothbrush

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    Posted . Owned for 1 month when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Easy to use. Works well with my iPhone. Best electric toothbrush.

    I would recommend this to a friend
  • Pros mentioned:
    Battery life

    Rated 5 out of 5 stars

    My Review

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    Posted . Owned for 3 weeks when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    What a fantastic toothbrush. I originally had a older model that eventually gave out and tried a TAO brand for a minute. That brush did not last not even 4 months. I reached out to customer service and only silence was heard back. So I went back to Phillips. Since the first brush, I cannot say enough how wonderful it has been. I highly recommend it to everyone.

    I would recommend this to a friend
  • Pros mentioned:
    Cleaning

    Rated 5 out of 5 stars

    Great purchase

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    Posted . Owned for 4 months when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    It feels like I had a professional cleaning from the dentist every single time I use it. Very happy with this purchase

    I would recommend this to a friend
  • Pros mentioned:
    App

    Rated 5 out of 5 stars

    Best toothbrush Ever!!

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    Posted . Owned for 3 weeks when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    This toothbrush not only gives you different brushing types, you can track how effective you are brushing with the Sonicare app. The app tells you if you are brushing too hard or too light and where you need to spend more time. It tracks your brush head life cycle and you can order brush heads from the app. You can personalize gum care, teeth whitening etc. a true smart tooth brush.

    I would recommend this to a friend
  • Pros mentioned:
    Cleaning
    Cons mentioned:
    Price

    Rated 4 out of 5 stars

    Great toothbrush

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    Posted .
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Did a lot of investigating before buying this toothbrush. It’s my first electric toothbrush and so far I love it. Cleans my teeth a lot better than a regular one. The only con it’s the price

    I would recommend this to a friend
  • Pros mentioned:
    Cleaning

    Rated 5 out of 5 stars

    Thought my teeth were clean!

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    Posted . Owned for 1 week when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Do you only get that once a year dentist clean feeling once a year or so? Well I'm here to tell you that this little beauty can give it to you every day. I was completely floored! It tickled at first but after the first use you get used to the cleaning vibrations that this toothbrush puts out. I highly recommend buying one, it will be the last, best toothbrush you'll ever buy.

    I would recommend this to a friend
  • Pros mentioned:
    Battery life, Cleaning

    Rated 5 out of 5 stars

    Great

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    Posted . Owned for 1 year when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Great toothbrush and holds a charge really good. Cleans teeth really good also.

    I would recommend this to a friend
  • Pros mentioned:
    Overall performance

    Rated 4 out of 5 stars

    Overview

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    Posted . Owned for 1 week when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    This thing is so incredibly loud, so loud my next-door neighbors thought I was using a vibrator twice a day in the bathroom. It works well and has a really cool charging system. The additional bristles are incredibly overpriced and makes me want to use a normal toothbrush. I would recommend if you’re terrible at brushing. PROS: Easy to use Great for lazy people Cool charging CONS: Louder than you think Expensive attachments Settings are just a marketing scheme

    I would recommend this to a friend
  • Pros mentioned:
    Battery life

    Rated 5 out of 5 stars

    Great Product!

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    Posted . Owned for 1 year when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    I’ve used this toothbrush for a little over two years now and it still holds strong. The traveling case is sleek and low profile enough to fit perfectly in my travel bag when on the go and as long as it’s fully charged the day before it can last pretty much the whole week. 5 Stars!

    I would recommend this to a friend
  • Rated 5 out of 5 stars

    Best toothbrush ever

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    Posted . Owned for 2 weeks when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Best toothbrush I have ever owned. Was hesitant due to the price, as I’ve never had a smart toothbrush but after using for a few weeks I’m super happy with it and will never go back. Love the features and ease of use, pairs via the app and phone easily too. Bought one for me and the wife, we both recommend!

    I would recommend this to a friend