I asked for a Phillips Sonicare electric toothbrush as a Christmas gift three years ago, and have thoroughly enjoyed this product.  I originally picked this product to try based on the fact that family members had already tried and liked this toothbrush.  My teeth feel so much cleaner than they did using a regular toothbrush, and I've had noticeablyless cavities and less tartar buildup.  The toothbrush buzzes to let you know when to switch to a different side of your mouth (it has 4 timed segments every-time you start it) so you know when you've spent enough time on a section of your mouth. I...