My dentist finally convinced me to begin looking for a motorized toothbrush. I read the relative merits of the ultrasonic vs. the rotary, and decided to roll the dice on a cheap ultrasonic. Happy on all fronts. Extra brushes included, and the brush cleans better than a manual brushing by far. Cheap too. Don't pay high dollar for a name brand that does the exact same thing. Get one of these. You won't be sorry. Makes an excellent gift too.