2 of 4 broke within 2 days
The bad: 2 out of the 4 heads broke (i.e. would not rotate) within 2 days of use.<br /><br />The good: The first one lasted at least as long as the Oral B branded heads. The 4th head, which I am currently using, has lasted a couple of weeks. UPDATE - the 4th head broke after 3 weeks.<br /><br />I would not buy these again.
Rating: 1 stars