Review (2/5): Eats batteries!
Save money in the long run by buying a model with a charger.My husband and I have had these brushes for about a year and a half and are down to replacing the batteries about once a week.
Mine died within a couple months of use. It would just keep shutting off during use even though the batteries were new. I called Sonicare, they had me take it apart and clean the contacts with rubbing alcohol, that didn't help, so they sent a replacement. The new one started doing the same thing within a few weeks, called again, again they sent a replacement. Their customer service is actually pretty good and they stand behind their products, but it gets old replacing batteries and replacing brushes.
Overall, I like the performance of the brush, it does a great job, and my teeth really do feel much cleaner.
I just ordered a set of two with chargers from Amazon, they are more initially but I know we will save money in the long run by not having to use 4 AA batteries every week.