I use to use Sonicare until I read a dental study which showed that the mechanical circular motion toothbrushes were much more effective than the "sonic vibration" ones like Sonicare. Now I use a $8 Crest Spin brush Pro.
Feels more clean than Sonicare. Only thing is, it uses 2 AA batteries about once a month. And rechargables didn't do too well in it (my NiMH just couldn't provide enough OOMPH).
I ordered the Elite 7500 Sonicare and 2 extra brush head replacements. Figure my brother and I will split the cost, share the brush, and use our own brush heads. Thanks for the input, folks!
I have the circular Crest toothbrush, but I hardly use the circular function. I just start brushing, halfway through realizing the spinning isn't occuring.
I got it as a stocking stuffer. It was very thoughtful.