Still getting used to the rotating (rather than the older style up and down/back and forth) head. Does a good job of making my teeth feel clean. The smaller head makes it easier to get to the back teeth. Has plenty of power, and I like the stutter timer. Performance/Cleaning Excellent power and battery life (7 days). The timer feature is really helpful: divide your mouth into 4 quadrants, upper right, upper left, lower right, lower left. Start brushing in one quadrant and after 30 seconds the brush will "stutter", telling you to move to the next quadrant. This model has three brushing modes, Daily Clean, Sensitive, and Whitening. Change modes by pressing the power switch. There are six different brush heads that fit this model, so you can customize the unit to your specific needs. Durability I can't speak to the durability of this model, as it is the first electric I've used in 15 years. However, my wife has been using an Oral-B since 1999, and all she does is buy replacement heads. On that, there is a wear indicator built into the bristles. They turn white after about three months of use.