Review (4/5): Don't buy the Oral B's....Get these!
They are as advertised. They were delivered on time. My ONLY complaint is that (and I suspect this is because they are "after market") they seem to get loose on the mounting fairly quickly. It doesn't stop them from doing a fantastic job, but it does set up extra vibration that is a bit annoying. Still, if this is the kind you need, as far as I'm concerned they are the only game in town. The Oral-B brushes that are still out there for sale are atrociously priced!