It vibrates just enough to get your teeth spotless but not enough to rattle your brain. The bristles are the perfect stiffness. I love it! My husband is also a great fan. An extra plus is the traveling protector. Makes traveling with a clean toothbrush easy. I would highly recommend it. I am just two months in, but I can tell you my initial impression is that this is so much better than my Sonicare.
Bottom Line: Yes, I would recommend this to a friend