Review (5/5): Best of all worlds... just keep it dry!
I have used the Sonicare Extreme for over 4 years, pretty much every day, twice a day. I've never had any problems with it at all. I use it with a few sets of Sanyo Eneloop AA's (the best!). I knew that it was prone to issues if you got it wet, so I was careful to never get it wet, and it's been rock solid. Before this, I had a regular Sonicare for about 2 years. It stopped holding a charge. That's the best part of the Sonicare Extreme. You use replaceable batteries and never have that problem. Hope this review gives you the confidence to try out the Extreme.