The Colgate Actibrush has a small round cup-shaped head that oscillates. It is not truly an electric toothbrush, I guess; it's a battery-operated toothbrush.
So is the "electric" toothbrush any better?
Good gadget to keep up the brushing. Great for people who are physically handicapped and have limited manual dexterity. Vibrates the whole head to aid with waking up in the morning.
But can instil laziness and foster short-cut tooth brushing. If you've got the right technique, it still can't beat the manual toothbrush.