Philips Sonicare

DiamondClean Smart (HX9904/71, HX9904/72, HX9904/73, etc.)

Philips Sonicare DiamondClean Smart (HX9904/71, HX9904/72, HX9904/73, etc.)

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Overall

#55 in

Electric Toothbrushes

according to Reddit Icon Reddit

Sentiment score62% positive
8
1
4

Top Pros

Top Cons

Last updated: May 20, 2026

Reddit Reviews

Reddit IconImpressiveSurround54
Reddit IconJametAllDay
5 months ago

It was around Xmas time at Costco. It was this one: Philips Sonicare DiamondClean Smart, model#HX9904. it's [$179 for two sets at Costco](https://www.costco.com/p/-/philips-sonicare-diamondclean-smart-electric-rechargeable-toothbrush-2-pack/4000381005?DM_PersistentCookieCreated=true&langId=-1), so my partner and I each got one. I thought it was a pretty good deal seeing that they are normally $200 each for the full set, including the charging glass and chargeable carrying case. I haven't had any issues, it is sleek and clean, the heads are also always for at costco. I also like that if I charge the travel case ahead of time, I can travel for like 2 weeks without needing to recharge. I also like that the typical charging cord is protected by a glass that the toothbrush actually sits in, meaning it never gets wet or jostled around. Anyway, others might have a different opinion, but I like it a lot compared to the Oral B, and the charger on that oral B stopped working eventually. Also, costco is nice because if something \*did\* eventually happen to it, I could go in an exchange it. But I've had this for quite a few years and it feels brand new.

Reddit Iconayo_ninja
5 months ago

go for [Philips Sonicare ](https://www.reddit.com/r/recsmatter/comments/1pswa4s/philips_sonicare_diamondclean_smart_9300_premium/?utm_source=share&utm_medium=web3x&utm_name=web3xcss&utm_term=1&utm_content=share_button)rather than Oral-B many people prefer philips sonicare over oral b because the sonic vibration action feels gentler on gums while still removing more plaque than a manual brush sonicare tends to be better on the gums and generally more thorough, while oral b sometimes feels more intense but isnt always as comfortable for daily use.

Reddit Iconnulllzero
5 months ago

näin necrobump niin io sarjasta 6 on se kultainen keskitie hinnan ja ominaisuuksien näkökulmasta, saat suurimmanosan lippulaivamallin ominaisuuksista mutta ilman isoa hintaa. isoin hyöty jos hyppää 9 on että saat 3d seurannan harjaamiseen 6 vyöhykkeen sijaan.

Reddit IconContent-Seaweed-6395
about 2 months ago

My last sonicare lasted over 7 years, it wasn't even dead when I ugraded to the $300 version and I have no regrets, it is something you use everyday, if not twice a day if it works it is worth it to last that long, in most cases you only have to worry about the battery losing charge and that is kind of unavoidable, unless you know of a brand that lets you repalce your own battery, although after like 10 years I would probably just want a new device with advances in tech and just general wear and tear.

Reddit Iconthe_real_snurre
9 months ago

My Sonicare with travel case (with integrated charger) is by far the best electric toothbrush I have ever used. Came here to say this.

9 months ago

Not bulky, no. And the built in charger is a blessing.

Reddit Iconschmally_ward
12 months ago

I’ve had two Phillips diamond cleans break on me, but my partners have held up just fine. Bought the model a tier down literally today - seems like it does the same thing for half the cost

12 months ago

I’ve had two Phillips diamond cleans break on me, but my partners have held up just fine. Bought the model a tier down literally today - seems like it does the same thing for half the cost

Reddit IconNancy6651
3 months ago

I've been using Sonicare toothbrushes forever. I usually get the package of 2 of them, in case I can convince my husband to use one (unsuccessful so far) or for travel. I like the one I have now since it has more "intelligence" and lets me know when to replace the brush head.

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