OK. Here's a review you won't find easily unless you work hard. The most ANNOYING thing about ALL electric toothbrushes (and I mean all) is that the batteries do not last beyond two years (often less) and even then they lose power and capacity. Moreover, they are invariably sealed and you'd have to search the internet on how to replace them (yes it can be done cheaply IF you know how) and be a bit of a tecchie to actually do the job. So ALL these electric toothbrushes should say LOUDLY and CLEARLY that they last, at best, for two years and you are EFFECTIVELY buying a disposable product. Of course just like ALL disposable products some last longer (I had a NiCd powered Sonicare for 4 years) depending on use. Moreover ALL these Oral-B toothbrushes are basically and FUNCTIONALLY the same. Even if you had less "buzz per second" (such as that on some older models) then by using the toothbrush for a few seconds longer you'd get the same overall "buzz". So waste not your cash on that count. They vibrate in exactly the same way with all the rest being bells and whistles that make you part with your hard earned cash. An LED here or a wireless timer there won't reduce plaque! The heads are obviously different and that's another gimmick that manufacturers try and make you pay. Last year's "rotation" suddenly becomes less "clean" whilst a name like "Trizone" will now obliterate those nasty bacteria out of your house and home! The moral of the story is "Buy the cheapest model if you want more for less". This model at sub-twenty pounds price is the best choice whilst other more expensive models do exactly the same at a higher cost and no extra benefits.