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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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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 11 Showing 201-220 of 1,317 reviews
  • Pros mentioned:
    Cleaning

    Rated 4 out of 5 stars

    Great clean, maybe not better than cheaper model

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

    Excellent job for tooth and gum cleaning - feels like my mouth has been pressure-washed :) I think the only major difference between this and the cheaper model is the "whitening" mode which is just the regular brush mode with two extra focused sessions on the upper and lower front teeth. The buttons also look slightly different, but functionally it seems the same.

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

    Rated 5 out of 5 stars

    Automatic tooth cleaner machine.

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

    It's brushing my teeth for me. What else can you ask for?

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

    Rated 5 out of 5 stars

    Alex's toothbrush

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

    Excellent electric toothbrush. Priced properly and offer all the things other expensive brushed offer.

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

    Rated 4 out of 5 stars

    Great product... high price

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

    This is an excellent product. I bought for me 13yo son who hadn’t been brushing properly. The results have been positive, he is now spending longer brushing he s teeth and it shows (my dad is a dentist). I haven’t used it personally, but I have a previous model that I am happy with. If looking to upgrade from one that already uses diamond heads, I’d pass. But if you are going to buy a new electric toothbrush this is the one you should get. I hope this helps

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

    Rated 5 out of 5 stars

    Awsome

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

    I love the concept that it hooks to my phone and gives me the ability to know how good I brush

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

    Brilliant tool = Brilliant smile

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

    It’s brilliant! I love the style, elegant finish & ergonomic.

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

    Brush your teeth like a dentist! You gotta try em!

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    Posted . Owned for 8 months when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Didn't think I'd splurge on myself through dental care but it was well worth it. The timed setting is a huge plus and really is standard for these smart brushes. The sonic vibration cleaning feature was honestly novel, and took me by surprise the first time I used it. It only took one more morning of brushing for that "break-in" period and I learned you don't need to apply a much pressure at all to get an effective clean. Be warned though for anyone who has not used a sonicare product before, the first time using it will not be the same as any other typical spinning or electric tooth brush! I have not used the app that comes with it yet but the various pre-sets have been more than handy for my dental needs.

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

    Rated 5 out of 5 stars

    Fantastic!

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

    This is my second Sonicare toothbrush. I purchased this one as a replacement after my last one started going out a little after 2 years. The app is super easy and really helpful to get the best brush in. The new feature that tells you if you're using too much pressure.

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

    Rated 5 out of 5 stars

    I brush my teeth better

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    Posted . Owned for 10 months when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    I did not know how much better I could learn to brush my teeth. The app teaches you how to correctly brush you teeth. I thought this was very expensive when my wife bought it but as I have learn to brush better it is defiantly worth it.

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

    Rated 5 out of 5 stars

    Fantastic product

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

    Excellent product and teeth feel very clean with an excellent battery life.

    No, I would not recommend this to a friend
  • Pros mentioned:
    Cleaning

    Rated 5 out of 5 stars

    Toothbrushing will never be the same

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

    My second diamond plus toothbrush. I would never go back to regular brushing. Really helps with him disease

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

    A girly toothbrush for a girly girl!!

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

    I will never own or use a regular toothbrush again!!! This brush is so strong and powerful, u feel. So clean and it has made a significant improvement in my oral health in a short time.... I recommend that EVERYONE have and use this incredible gadget!!:)

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

    Rated 5 out of 5 stars

    Great brush

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

    Great toothbrush. Maybe unnecessary with Bluetooth and smart toothbrush heads. The app is really helpful. I have had a Sonicare years ago and have had other electric toothbrushes, and this one is by far superior.

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

    Rated 5 out of 5 stars

    Perfect gift

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

    Gave it as a gift, they love it. Really teaches you how to properly brush.

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

    Rated 5 out of 5 stars

    The last toothbrush you'll need!

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

    Great product! Has been a great investment and it is easy to use. Highly recommend.

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

    Rated 5 out of 5 stars

    Previous Sonicare owner

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

    After about 5 years, my old Sonicare batteries couldn't hold a charge. I wanted to try the newer version, and am satisfied. Although, I don't really need the extra options with this version. My dental hygienist, and dentist, have very little work to do since switching to Sonicare!

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

    Rated 5 out of 5 stars

    Cleanest teeth!!!

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

    My teeth love this !! Will buy another for my wife!!

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

    Rated 5 out of 5 stars

    Sonicare

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

    Unbelievable how well this cleans your teeth! I definitely recommend this product.

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

    Rated 5 out of 5 stars

    Has improved teeth cleaning

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

    I like the sonic care toothbrushes and this is now my favorite. The app that guides you on cleaning teeth as you brush shows you were you are missing spots, doing too hard or too soft. My next dentist visit improved. Take the time to use the app, it’s worth it.

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

    Rated 5 out of 5 stars

    Best Sonicare model

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

    Love this one from Sonicare. It was well worth the investment. It comes with different types of brushes already, it cleans very very well. I know my dentist will approve.

    I would recommend this to a friend