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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

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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 9 Showing 161-180 of 1,317 reviews
  • Rated 5 out of 5 stars

    Sweet Toothbrush

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

    Works great! Like how it has 3 speeds. Love the design as well. No issues with it whatsoever.

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

    Great brush, worth the money.

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    Posted . Owned for 1.5 years when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Powerful brush with ample settings. Easy to use. I don’t use the app much, but it works fine.

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

    Fantastic

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

    I had a ten year old Somicare that finally gave way. This one has been amazing. Feels like I just left the dentist.

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

    Rated 5 out of 5 stars

    Wow!

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

    I’ve always wanted an electric brush. I did tons of research before purchase. I am blown away. Worth every penny. I understand the hype. My mouth feels and looks soo much better. My dentist even noticed and I brush regularly but it’s just soo much better than a manual brush. I highly recommend this brush to everyone on the planet

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

    Rated 5 out of 5 stars

    Great ET

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

    Been using the diamond clean series for years now. Such a great electric toohtbrush, has a premium feel and leaves your teeth squeaky clean.

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

    Rated 5 out of 5 stars

    Great sonic care toothbt

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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 keeps you on track with an oral hygiene program which is easy and very effective. Gums as well as teeth are cared for. It also brightens teeth although I’m not sure about to the degree advertised. It does make your teeth feel like you have just had a professional cleaning. A good purchase

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

    Rated 5 out of 5 stars

    Great Toothbrush with a lot of Technology

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

    Somewhere in my travels in central America I left my old Sonicare toothbrush, so I needed a replacement. I did some research and found the Sonicare 9300 and it seemed like a perfect replacement option. I have to admit I was a little sceptical of the need of an app for my toothbrush, but I have found it very useful.

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

    Rated 5 out of 5 stars

    Awesome.

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

    Great product, easy to use and recharge. The app is great as well.

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

    Rated 5 out of 5 stars

    Great toothbrush

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

    Great toothbrush. My teeth feel cleaner than ever, or at least cleaner than when I don’t brush them. Seriously though, it works great and the battery lasts forever. Highly recommend.

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

    Rated 5 out of 5 stars

    Amazing teeth brushe.

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

    Incredibly cool thing! It cleans and cares wonderfully, plus massages the gums. Plus did the great job with whitening my teeth.

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

    Rated 5 out of 5 stars

    Made my teeth better

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

    My Dentist said my teeth were a lot better after I used this. The app was fun the first few times, but I lost interest. The app did teach me how to brush better.

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

    Rated 5 out of 5 stars

    Great toothbrush

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

    Great toothbrush would buy again and again cleans very good

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

    Rated 5 out of 5 stars

    I love it!

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

    I love the Sonicare Diamond Clean, This model has many modes. It leaves my teeth feeling clean and my breathe fresh.

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

    Rated 5 out of 5 stars

    Even better than older Diamond 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 is a replacement for my old Diamond Clean that gave up the ghost after 7 years. Feels more powerful and the app is great for teaching proper use. Teeth feel super smooth after each use. Love this powerful little brusher!

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

    Rated 5 out of 5 stars

    SQUEEKY CLEAN

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

    I get more cleaning done in 2 minutes than most do all day with a traditional toothbrush. Teeth not only feel great, they are smooth and bright.

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

    Rated 5 out of 5 stars

    Even better than my original

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

    My diamond care was stolen (don’t ask) and I replaced it with this model. The brush links to my iPhone and tells me when my teeth are clean, if I am using too much pressure or moving too fast. Turns out I was brushing completely wrong with my first diamond care Small changes which have made a huge difference Turns out

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

    My Toothbrush

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

    My doctor recommended I use this product - and she was right about it being one of the best. It is easy to use and I love that it recharges so that it is ready to use at any given time. An excellent product and I highly recommend.

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

    Rated 5 out of 5 stars

    Toothbrush

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

    Very powerful and good cleaning toothbrush So glad I have it

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

    Rated 5 out of 5 stars

    Great toothbrush

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

    Teeth feel so clean! Battery stays charged for so long!

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

    Rated 5 out of 5 stars

    Great for good brushing habits!

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

    I'm thoroughly enjoying the use of my new toothbrush. I was already neurotic about keeping my teeth clean previously, so this just adds to that haha. It's well built and does an excellent job cleaning my teeth. I can see how the brush heads would get expensive, but I'm not really worried about that if I'm paying $200 for a toothbrush.

    I would recommend this to a friend