i'll never go back
I will never go back to using a regular brush again.  Admittedly the first couple times can be somewhat shocking to have it gyrate so vigorously, but you get used to it with in a couple days.  In short, this brush makes you feel like you've just come from the dentist every day.  My teeth are also noticeably whiter after roughly 4 weeks of use.
Rating: 5 stars