Excellent cleaning action.
The specs are there for you to see, and I'll just say that the Oral-B Smartseries 4000 lives up to each of them. I have been using the 4000 for a couple months now and have found it to work just as good (if not even slightly better) than the [[ASIN:B00132FUNG Water Pik Sensonic Professional Toothbrush]] I was using before.<br /><br />The bells and whistles are nice; timers during brushing and also a warning if you're brushing too hard. What I really care about, though, is how clean my teeth feel and look after regular brushing. In that respect, the Smartseries 4000 performs with the best of them.<br /><br />Replacement heads aren't cheap. In fact, they're slightly more expensive than the Sensonic replacement heads I used previously. Still, the brush performs up to my expectations, so the clean teeth and feeling are worth the price. Overall, I can definitely recommend this brush!
Rating: 5 stars