PHILIPSSonicare DiamondClean Series 9000 Electric Toothbrush - Sonic Brush, Cleaner Teeth and Gums, 1 X C3 Premium Plaque Control Brush Head (Model HX9911/63), White

I bought this as a replacement for my older 4 and a half year old Sonicare which was starting to sound a bit unhealthy.On the whole this is a brilliant upgrade. The 4 cleaning modes all work well as expected although the standard clean mode takes a bit of getting used to. The clean mode on my old model was 4x 30 seconds while this new model is 6x 20 seconds. Small niggle but not sure why they changed it. I definitely preferred the 4x 30 seconds on my older brush.Battery life is excellent as always with Philips products. I have had this toothbrush for 2 weeks, and apart from the initial 24 hour charge it hasn't been back on the charger since. My older toothbrush used to last around a week before needing a charge.The app, however is more or less pointless and unnecessary. I can't really understand why a toothbrush needs to be connected to your phone, other than as another data gathering exercise, since most companies seem to want to know as much about you as possible.Overall, an excellent toothbrush and a great upgrade over my older Sonicare. I just hope it lasts as long!App is unnecessary

My old diamond clean lasted for years. This time something internal near the head started rattling after about a year. It still brushes but something seems off like the brushs arent holding as firmly maybe. It's an expensive brush, expected better but it still cleans pretty well. My old sonic care still better though.

One of the best toothbrushes on the market

Finally update: I bought this and it was fine for the first nine months. Then it died. Amazon (eventually) got it repaired. Then it lasted another year and died again and they refused to repair it - the manufacturer because Amazon had already repaired. Amazon because by the time I had that response from the manufacturer it had reached 2 years from the date the order was placed (even though it was less than 2 years from delivery date to second breakdown). That really is rubbish on a £200 toothbrush. And the prior one I had lasted 2 years. So don't expect it to last even the length of your consumer rights, and expect both manufacturer and Amazon to be unhelpful about any problems.Originally I wrote the following review: Its an electric toothbrush, and it seems to work. So I'd say it is good enough but not wonderful.If you want a bit more detail: It has good battery life, and simple controls, and seems to have a good movement in terms of keeping my teeth feeling clean compared to the cheap brushes that just rotate. But whether the sonic element works or not, I can't really tell. The sonicare branded brush heads are ten times the cost of a toothbrush, and have a little chip to count uses to then bleep/flash annoyingly at you if you continue to use them for longer than a month, so I broke the little connector at the bottom of the brush head to stop that, and then bought non-brand heads which were much better value and seemed equally good quality. But obviously it is still creating lots of plastic waste. So if this is in your price range, and you aren't looking for something with better eco-credentials it seems alright. And based on my previous example works reliably for 2-3 years for two people, which seems adequate but isn't really enough to celebrate.9 months later I wrote the following update: It has done exactly what the predecessor did after 2 years - broken irreparably in exactly the same way. It feels loose at the head and makes a horrible noise, but no movement transfers to the brush to make it functional. After 9 months of light use, that's rubbish. I've now got to work out whether to go to Philips or Amazon to get it replaced.

My previous Philips Sonicare DiamonClean toothbrush finally stopped charging properly after almost 9 years of use so I thought I would upgrade to the latest and greatest.The new toothbrush has a feature that allows you to adjust the intensity, a feature I'm not sure I will ever use, but it's an option that is there. It also has a much smaller charging stand. Personally I preferred the glass to this new perspex base, but unfortunately Philips have not made this toothbrush backward compatible with the old charger, which has a higher charging wattage.As they have introduced bluetooth connectivity with an App, I thought I'd give that a go. I connected my new handle to the app and was immediately required to allow my hygiene data to be shared with Philips to be able to use this feature. As I wanted to see what it was all about, eventually, after multiple attempts to continue without ticking the box and being sent back to the start screen of the App, I complied and checked the box that I did not agree with. I strongly feel that this is wrong.After giving up my privacy to use all of the features of the toothbrush, I was informed there was a firmware update available. This is where things went downhill fast. The update bricked the toothbrush that entered a cycle of flashing lights. After talking with Philips support, I was advised to get Amazon to replace it, which they did, next day. Amazon, your customer service was amazing here, well done!When the new brush arrived, I ensured I did the firmware update first, to make sure that if it happened again, I could just reject it immediately. Fortunately with this new handle things went smoothly and it updated and is still working.Having spent a few weeks now with the toothbrush and the app I can say that the App is a gimmick. Even worse, there is no need to require sharing my hygiene data with Philips for its features to work as the "suggestions to improve your brushing" are limited to saying if your average brushing session is too short or using too much pressure. All of this is averages that can be calculated on device!If you forget to launch the app before you start brushing, you get no data from that session. If you switch app whilst brushing, it records the brushing time as how ever long you'd been brushing for when you switched the app. Personally I think it would be better not to record this at all, as it's just adding inaccurate data into the log.So my advice: If you buy this toothbrush, don't bother with the app, just use it on its own. It still has a built in timer that tells you when to move onto the next session. It still has pressure alerts from the handle. There is a light for when the toothbrush head needs replacing. There is simply no benefit to the app for someone who brushes their teeth twice a day for the length of time the timer in the handle runs.Forget the app, enjoy a good toothbrush. Hopefully it will last as well as the one before!