Review (4/5): Good.  But a little weird.
The Oral B is good value and works well. No complaints. It replaces one I had that finally went to that place in the sky where all electronic gizmos eventually go. The one that died had a single rotating head. This one has a rotating head and a second head that scrubs up and down. It's a bit of a mouthful and I'm totally conflicted about which vibrating bit I should be paying attention to. But it does the job. And if one wants to use only a rotating head, that works fine. I'm completely satisfied with this product.