I just bought a basic Sonicare toothbrush, and I love it.
I was using a Braun 3-D that was many years old (it was a gift). I really like the Sonicare brush head better than the round brush head on the Braun.
Just thought I would share.
Your teeth will be so clean, your dentist will ask you what you've been using. I started with a basic Sonicare, switched to a Rotadent because my dentist said the Sonicare was contributing to my teeth's sensitivity, then I bought another Sonicare because I didn't like the Rotadent. You literally have to clean one tooth at a time, and my teeth didn't feel as clean.
When I had my teeth cleaned the first time after using my first Sonicare, my dentist was shocked at how little plaque I had, especially since it had been about 2 years since my last cleaning.