Philips Sonicare DiamondClean 9900 Prestige

I've tried many brands of electric toothbrush and this model works the best. I tend to push too hard on the brush when brushing. Most brushes will briefly stop and wait to continue brushing which is super irritating. This model has a stronger motor and powers through brushing with a slightly stronger push which is wonderful. My teeth are clean and my gums feel great. I have used the model below and above this one. The model above this one is their top tier model and only works with a phone app which is very irritating for a device you use every day. The model below this one doesn't have as strong a motor and pauses out frequently for me.

Works Great. The new style brushes really do clean teeth well. Bit expensive but worth it.

TLDR; Its a bog standard electric toothbrush with nothing special about it at all. Save your money and get something more reliable. The long version; It's unreliable charging on the base it comes with. It has been since I got it. Maybe there's a secret dance you're supposed to do to get the charger to work reliably as you place the toothbrush on it's charger? If there is, I don't know it and I find charging this toothbrush one of the most frustrating, unsatisfactory usages of my time. I'm literally to the point where I have to stand in front of the charger that I've placed the toothbrush on, and just wait. Is it going to start beeping at me eventually? How long do I have to stand here before I'm confident there'll be no issue with the brush charging? Who knows?? I haven't figured that out 100% yet and I've hovered over this toothbrush for a full minute before it finally indicated it wasn't charging right. How do I know? I recorded it! I feel like a lunatic having to say this stuff so I needed the data to prove to myself - I'm not imagining it. I'm not exaggerating. I will happily share the footage with anyone who asks. I've been fussing with this toothbrush since April when I got it and it's now November. I told myself, "it's too expensive to just give up on! Surely it's just a matter of user error right??" Nah. This is a known issue by Philips. I searched for a solution thinking I must just be missing something. Their FAQ first frames it as user error, telling users not to charge with the wrong base. Philips charging bases aren't interchangeable. Really Philips? How is that cost effective or smart design in any fashion? Do better. But let's not get hung up on that. This base came with the brush at the time of purchase. Moving on. They tell you things like "make sure your charger is not on a metal surface." -_- Is there a lot of metal in the average persons bathroom? I ask because I feel like I'm being gaslit by Philips into thinking I'm just incompetent as a toothbrush or tech user somehow. I know a lot of metal exists in some bathrooms. But I haven't seen a lot of people using those metal filled bathrooms to charge their toothbrush in. Those bathrooms are usually in gyms, military ships, convenience stores, or public restrooms that get high traffic. It starts to feel insulting when I'm working so diligently to get this very expensive item to work, to do a necessary task, twice a day, to have the maker say things like this when it's obviously a known issue if you do a 5 second internet search. Heaven forbid you place it on the charger and you think it's charging so you walk away. Unbeknownst to you, there's a small faint beep that's started since you left. You go to pick it up to use it the next time you want to brush your teeth and you might notice it doesn't work. Guess what! Your toothbrush is dead as a doornail. It's not charged. I've taken to trying to brush my teeth additional times throughout my day, to try and avoid being caught out by a dead toothbrush, right before I go to bed or when I need to get out the door for work/life. How is that an efficient use of my time? But if I don't - I run the risk of not being able to properly care for my teeth and brush thoroughly twice a day. Does Philips know how stupid they make customers feel with their crappy product and apparent disinterest in making sure their tech has any sort of reliable quality standard. "I spent a lot of money on a well reviewed toothbrush that's supposed to be one of the best so I don't have to spend loads of extra money, time, pain or suffering over dental issues. Does it have charge yet? Can I use it yet? No? Dang." Sure, I can use it manually - but doesn't that defeat the point here??? I'm sick of companies not valuing customers time, money or shopping efforts to find and acquire products they need in their lives. I'm sick of companies producing the most minimal pieces of junk they can possibly spew out, slapping some proverbial lipstick on their frankenstein pig creation by making it pretty colors or shiny (seriously? a shiny charger? for a toothbrush? you've brushed your teeth before right Product Designers of Philips? I know you know toothbrushes drain. The stand you include has drainage. Why doesn't the charger? Why is the charger gold? Is that a good look to someone, with the way a toothbrush drains a sort of toothpaste tinted water?) Toothbrushes drain downwards onto chargers. Duh, right? I get that working chargers aren't really Philip's thing but it feels necessary to point this out because it seems like if you use your toothbrush and it indicates it needs charged, and you place it on the charger - Philips would understand, there's gonna be some water drainage. I find that if my toothbrush has any water in, on or around it - it freaks out and can't charge. I have to literally ~dry~ my toothbrush to try and charge it. I don't mean just wipe the base and sides of it with a microfiber cloth. I mean, make sure you flick every speck of water out of the head, then wipe down the sides and base, wipe down the charger, and take off the head. Wipe any water you might find that got under the head at the point where it connects, and then place it on the charger. Even then it's not guaranteed to work. Don't walk away, you're not done. You need to start a timer for yourself. At least 1 minute. You're gonna wanna wait to see if you missed even the tiniest bit of water that makes its way down to the charger so you can dry that too. You'll know because the charger will start making your toothbrush beep and flash like it's about to self-destruct. I don't remember any of this being included in it's advertising. I'm pretty sure if someone had told me the toothbrush I'm considering purchasing needs dried to the point of OCD - I'd have had 2nd thoughts about such a purchase. Especially for the price I paid. So no. I would not recommend this toothbrush. If someone knows of one that's better, hit me up. And if anyone from Philips actually takes the time to read this, you're welcome. Product ideas make bank. I've given you a lot here. A charger that drains. A charger that's not gold. A toothbrush that can handle being wet and still charge. A quality toothbrush that does what it's supposed to would ensure customer loyalty and lock them in to buying replacement heads for life. Get it together.

My dental hygienist recommended this toothbrush. After 6 months of use, the parameters for measuring gum issues have greatly improved. You can pair it with your phone to get a good real-time read of whether you're using the toothbrush correctly. After a few sessions, you'll get the feel of it. Easy to recharge. Charge lasts for several weeks of twice daily cleaning. Works in the short. Good quality. Feels a little strange at first in certain parts of your mouth; becomes "brushing as usual" after a few weeks. Really saw improvement in dental check-up. It's worth the $$s

I am a long time Sonicare user. My last 9500 died after about four years. The metal stem that holds the brush just popped out one day. The battery was fairly deteriorated so it was time soon anyway. When I started to explore my latest options from them, I was a little surprised by how little has changed. The models are all basically the same as they were back then. Except for this super fancy one. I was nervous about some of the reviews but I based my decision to buy on all of the good luck I have had with their toothbrushes prior. This is my third. It is early so I cannot speak to long term quality concerns that other have voiced. However, charging, usage, and app connectivity are all spot on. The app is a bit finicky and I wouldn’t buy it for that. My 9500 used the app as well and I really never used it beyond the first few days. I am going to try it again with this as it is improved but it still doesn’t do a great job of tracking much. The win here is with the powerful quiet motor housed in this slightly smaller soft touch handle. It looks and feels great. I also love that the case has USBC charging so you can charge up when traveling. Though with about a two week charge, you would need to be going a long time to need it. Most of my complaints are little things but at this price, Sonicare should be trying to get them right. For instance, why is there no midnight brush heads. You spend almost $400 for a toothbrush and nothing matches. The great tech designers would never have allowed that. Imagine Apple making a phone where the front didn’t match the back. Little but something they need to consider. You can’t store your brush heads in the carry case with the plastic head cover. Not huge but annoying. I do wish the app had more robust brushing tracking like their primary competitor. I also worry about quality based on some of these reviews though I will note that upon registering the brush, Sonicare has extended their warranty out to eighteen months which should give folks some additional peace of mind. If you aren’t sure, save the money and buy a 9500. For me, at least on sale, I am a fan.

I have been using it for nearly 3 months, I like it and the battery holds charge for around 2 weeks with regular usage, the travel case is neat and slick. It is definitly pricey but it gives me a good battery life and cleans the teeth well.

This was recommended by my dentist. Probably the best miney I have ever spent. Learning how to brush my teeth all over again after 40 years. The irony is that my morning breath is gone but you need to follow the app and make sure you take the time to do it right every night. 6 minutes brush 3 times a day has saved my teeth and gums. Thank you Phillips and the design and engineering team that created this (yes very expensive) marvel

Muy buena calidad y fácil sincronización con la app. El uso es muy sencillo e intuitivo. La limpieza es profunda y desde el primer uso se nota la diferencia con otros cepillos. Lo recomiendo sin dudarlo.

I am extremely disappointed with the Philips Sonicare 9900 Prestige Rechargeable Electric Power Toothbrush with SenseIQ. Shortly after purchasing this toothbrush, I encountered a significant issue. When I changed the brush head, something inside the device became loose, causing it to malfunction. Despite my repeated attempts to seek assistance from Amazon, I have not received any help in getting the toothbrush repaired or replaced. This has been an incredibly frustrating experience, and I am left with a defective product that I cannot use. Given the high price point of this toothbrush, I expected much better quality and customer service. Unfortunately, this experience has left me thoroughly dissatisfied with both Philips and Amazon. I do not recommend this product to anyone looking for a reliable and durable electric toothbrush.

Cleaning quality with the A3 brush heads is impressive. And I was already happy with my previous brush, the Sonicare 6000 series from a few years ago. The brush is shorter, the charging case is much smaller than the 6000 series box and has a USB-C port. This means that if you travel regularly and take this toothbrush with you, you'll love the new travel case.