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Customer Ratings & Reviews

Your price for this item is $131.99
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The comparable value price is $219.99

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 30 Showing 581-600 of 1,317 reviews
  • Rated 5 out of 5 stars

    Best electric toothbrush

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

    Best electric toothbrush i ever bought. And yea it is expensive but worth it. No more tartar build up. No more bad breath. Buy yours now!!! :)

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

    Rated 5 out of 5 stars

    Philips sonicare 9300

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

    I’ve been using these type of toothbrush for many many years. My last one was 5 years old, I accidentally left it in a hotel. This new one definitely seems more powerful and the battery lasts a lot longer. It only needs charged every 10 days or so. In my opinion it’s one of the best ways to keep your teeth clean and your gums healthy. My dentist specifically recommended this manufacture and after a year of using it the plaque buildup was less than 15% of what it used to be for my six month routine dentist cleaning. It’s a very expensive toothbrush but if you use them for 30 years you will most likely be extremely happy that you did. Over the last 10 years I have not had one single cavity.

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

    Rated 5 out of 5 stars

    Excellent tooth care

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

    Solidly built, cleans very well. Feels like a dental cleaning each time I brush.

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

    Rated 5 out of 5 stars

    Awesome toothbrush!

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

    So far so good. This is probably the best toothbrush I have ever used.

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

    Rated 5 out of 5 stars

    A great brushing experience!

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

    Very smooth and soft on gums and excellent cleaning!

    I would recommend this to a friend
  • Rated 4 out of 5 stars

    Works as advertised!

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

    It’s much louder than I thought, but the carrying case and design are much better than my previous Sonicare.

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

    Rated 5 out of 5 stars

    Where has this been all my life

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

    Its the ferrari of electric toothbrushes...w/out the high maintainence.

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

    Rated 5 out of 5 stars

    Wonderful toothbrush

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

    We have been using Sonicare toothbrush’s for years and this is by far the best one.

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

    Rated 5 out of 5 stars

    Great!

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    Posted . Owned for 11 months when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    My teeth have never felt cleaner. I love this toothbrush.

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

    Highly recommend, worth to spend this much money!

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

    My dentist has recommended me to purchase and use this electric tooth brush. It is bit costly but worth to spend that much amount one time. I highly recommend this toothbrush with its multiple settings that really leaves your teeth smooth and shiny!

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

    Rated 5 out of 5 stars

    Excellent product

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

    Makes brushing your teeth easy .... results are awesome

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

    Great toothbrush

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

    Very nice, and efficient ! Love how powerful and comparable it is!

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

    Rated 5 out of 5 stars

    Highly recommended

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

    Best buy always helps with all my needs. Cleaner, whiter teeth!

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

    Rated 5 out of 5 stars

    Excellent gift

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

    I own one and gave this as a gift. It works great and keeps on giving

    I would recommend this to a friend
  • Rated 4 out of 5 stars

    It works as intended

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

    I don't give it 5 stars because I think it needs more time to test the results of the brushing plus the brush heads. The app works fine with the toothbrush and the operation itself is easy and working great. As with the cleaning, I think it is as long as you follow the promptings on your phone. I think the learning curve is medium because it has a technique to it that I've yet to master to be able to clean effectively in a single use. This one does not come with a tongue scraper head but I think you can buy it separately.

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

    Rated 5 out of 5 stars

    Awesome Rechargeable Toothbrush

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

    I really like this rechargeable toothbrush. Cleans teeth well and love the case.

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

    Rated 4 out of 5 stars

    Phillips sonic care Diamond clean

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

    brushing with this toothbrush leaves my mouth feeling super clean. stays charged for days while traveling.

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

    Rated 5 out of 5 stars

    Best toothbrush that I’ve ever owned

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

    Love the app that comes with it. Very helpful, my mouth has never been cleaner.

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

    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.

    Awesome!! Really like it and it does what it’s supposed to do but better

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

    Rated 5 out of 5 stars

    Love it; kids use it

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

    I had no idea what an improvement in dental cleaning this toothbrush would be

    I would recommend this to a friend