If you’re deciding if you should go with Oral-B or Sonicare, you should check out the results of this Cochrane review:
only one type of electric toothbrush, the rotating oscillating toothbrush consistently demonstrated a statistically significant benefit over manual toothbrushes
I use a Sonicare (Flexcare and EasyClean) because at the time of purchase they used better Li-ion battery technology and Oral-B used NiMH batteries. My experience was that NiMH batteries didn’t last as long as the rest of the toothbrush. I’ve been happy with my Sonicare brushes (and my dentist agrees with the results), but they might not the be actually the best kind of electric toothbrush. Side note is that NiMH batteries are easier to source and replace.
If you hate needless batteries (like I do), there’s the French classic Broxo:
If I were to buy a toothbrush now, I would buy the Broxo because what is the point of batteries in a toothbrush. They have a limited lifetime and often decay before the mechanism dies. I mean I just stand in front of the bathroom cabinet anyway.
