Philips Sonicare DiamondClean Smart 9300 Rechargeable Electric Toothbrush, Black HX9903/11

Do not buy this product. I have had this toothbrush for almost a year, received as a Christmas present in 17. I must say that this product does it job above and beyond the description. My teeth have never been cleaner. The brushing experience is great and the toothbrush teaches you how to completely cover all areas of your mouth. It is an outstanding toothbrush that up until yesterday I would have highly recommended. Then along comes Phillips with an update. Now you cannot brush your teeth without Phillips receiving data about your session. I don’t want people to know how I brush. It is a toothbrush but Phillips has changed it from a great piece of oral hygiene equipment into some Orwellian tattle tale. I want my 2 minutes in the morning and evening to be spent whitening my smile, and destroying plaque, which till yesterday is what it did. Now 4 minutes a day are devoted to Phillips marketing research and how to sell me things I do not want, need, or desire. Phillips has destroyed an amazing product to appease the marketing people. Do not buy.

This unit is amazing, while it actually functions. This is the third diamond care unit I have personally owned, and also the third unit to cease functioning (each unit only lasting a year or less).The first unit's metal shaft (where the toothbrush head attaches) became loose and started making a loud buzzing sound, which progressively got worse until the brush no longer pulsated. It had never been dropped, and I had always been very careful with how I handled it. I contacted Phillips in order to receive a replacement, as the unit was still within the 2-year warranty, and was informed that I would need to return my current brush to them before they would ship out a replacement. I purchased a cheap battery operated toothbrush to use in the meantime and received a replacement diamond care in about 1.5 weeks.The replacement arrived and functioned for about a year. Once again, the exact same problem happened. Mind you, this time I was even more careful with with the brush. At this point, I was incredibly annoyed by the quality of this product. I'm not one of those people that expect to purchase a device and expect it to last forever, but at around $170, I DO expect it to last for longer than a year.Around this time, I noticed that Phillips released a newer version of the brush with smart features and presumed that perhaps they worked out some of the bugs. Apprehensively, I opted to purchase this new model rather than go through Phillips for another replacement of the same apparent dud.I purchased this smart edition (9300 series) on January 31, 2018. Today it is August 15, 2018 and I already began having the exact same issue with this unit about a week ago. Once again, I contacted Phillips to have it replaced and was told that I would need to send the unit in prior to receiving a replacement.I will use this replacement, whenever I actually receive it, until it inevitably ceases to function, but I will never purchase another product from Phillips. Between the terrible quality of their products, and the fact that they make you send in the malfunctioning devices prior to receiving replacement, it is very frustrating. These units still function as ordinary toothbrushes when they aren't turned on. I shouldn't have to go out and purchase a replacement brush while waiting on a replacement, especially after having spent almost $400 in less than 3 years' time. Unbelievable.

I recently upgraded to this toothbrush from a Philips Sonicare Flexcare and it has been absolutely worth it. If you are considering upgrading from a traditional toothbrush to an electric / sonic toothbrush I would recommend doing it immediately. For me, getting an electric toothbrush has been the best investments in personal hygiene by far. It is something I use multiple times a day, and every time I switch back to a traditional toothbrush or any reason, I can tell the difference. Even my dentist is astounded every time I go for a cleaning about twice a year, the sessions are super short as there is barely any plaque build up. If you are new to the space, I wouldn't waste my time with other options and go straight the best money can buy, and fortunately you don't have to look any longer because this product is it.Here are the biggest reasons why I'm loving it:- Good for travel / long battery life: I didn't realize initially, but the battery has lasted me for over two weeks on a single charge! I just take this in the travel case and forget about charging it for a while.- Easy Charging: Unlike my Sonicare Flexcare, you don't have to place the toothbrush on-top of a charging pin, you can simply place it in the charging cup. The cup can also be easily cleaned which is a big plus. You want this process to be as easy as possible and this delivers the best experience I could have ever imagined.- Seamless / waterproof / handsome design: Over time, my old Fexcare toothbrush started smelling funky because water and gunk accumulated around the seams between the rubber at the bottom charging area. I can already tell this will not happen with this toothbrush because of it's unibody and seamless design. I'd also like to mention the toothbrush and charging cup look really great, I'm proud to have guests go into my bathroom and admire this gadget. I'm trying to convince my wife to get the same toothbrush in pink, not only because it's a great product, but it will make our bathroom look even better.- Useful Smartphone App: I honestly thought the app would be gimmicky, but I was completely wrong. I build software products for a living and I can tell Philips has invested significant resources into building a truly useful mobile app. It blows my mind how well the accelerometers and pressure sensors work and the useful information that it relays to improve your brushing form and tell you where you missed a spot. Brushing too hard is a real issue with electric toothbrushes since in extreme cases, it could wear your gums down, this toothbrush tells you if you are doing it too hard so you don't have to worry! You don't need to use the app for this though, the toothbrush has a light at the bottom that tells you if you are applying too much pressure.- Overall very well thought-out user experience: From the unboxing to the first use, I was delighted at every corner. One of the best consumer electronic experiences I've had.I hope that helps!Hugo

I purchased two of these Phillips Sonicare Diamond Clean Electric Toothbrushs for nearly $200.00 Each.One died last week in less than 6 months of owning this toothbrush. The next time I will go back to Bed Bath and Beyond where they providefar better customer Return service than Amazon!

After years of dithering and suggestions from my hygienist, I finally ordered the Sonicare Diamond. It's expensive but it's every bit as good as you hope it will be. Solidly, made, easy to use and effective, it soon proves it's worth the price. (But look through the many sellers to find a good deal.)The Smart version directs you--through a free app-- to the areas to brush and the time to spend in each. No doubt that direction and the extra amount of time you brush (about 2 minutes) provide a lot of the value over manual brushes. But the "sonic" vibration that comes with the brush movements may also be part of the gain--although that one is hard to judge.The replacement brushes are expensive but their embedded chip allows tracking of brush wear and identification of the brush type (clean, whiten, plaque) for automatic adjustment of brushing times and perhaps vibration (also hard to judge).One brush handle is usable by two but you'll have to load the app separately if you want to accurately track each person separately.

I did my research on various electric toothbrushes. I made sure to take into consideration the quality of the brush, the durability and even the features the brush has to offer. I found that for the price, you couldn't go wrong with this toothbrush since it still provides you with adequate features for sensitive teeth, whitening teeth or just regular cleaning. I previously went to the dentist and the dental hygienist told me that my teeth were looking a lot better in terms of my gum care! That I would like to believe is a result of using this product.

Amazing price... been waiting for awhile for this to go below $170😬

Just get it.

Nice product but pricey. App for toothbrush is a little gimickey