Review (4/5): Cleans teeth very well;  need to clean handle afterwards
My friends and I have been using Sonicare toothbrushes since our early 20s, and this has been our collective experience.
PROS:
-Once you use Sonicare it is hard to go back to a regular toothbrush. You don't get the same "clean" feeling that you get from the vibrations. You can feel the sonicare get between the grooves in your teeth where a regular toothbrush just feels like you're rubbing the top surfaces.
-There are always deals on this toothbrushes; mail-in-rebates, etc.
-Charge lasts for a long time. I only charge mine every two weeks.
-I love the timer feature which lets you know you've been brushing for 30 seconds. I usually brush longer than 2 minutes as well because it does feel like you're massaging your gums.
CONS:
-Somewhere between the base of the brush-head and where the handle meet is this hollow area. It inevitably lets water, toothpaste, saliva etc. and collects in the nook (upper portion of the handle).
**This is how I have prevented this. Always remove the brush-head from the handle and just put it on before you use it. It takes less than 10 seconds so it's no big deal. With this method you can just rinse the inside of the handle and the bottom of the brush head.
**Rinse the loose gunk out of it by running it under the sink and use Lysol or Clorox Wipes to clean the rest of the gunk from the handle if you don't use the above drying method.
**The Flex version which apparently doesn't do this but there is an added cost.
-I stick with this version because the brush-heads seem to be cheaper than the newer Flex models.
-There is no battery indicator. If you lose track of when you charge it, it just might die on you out of nowhere, leaving you with a half-brushed mouth. So I often either use a back up toothbrush or manually brush with a Sonicare (although I think it ruins the bristles quicker that way).