Preliminary review [SEP] I've only had this less than a month and that's isn't near long enough to really comment. So far it is very good. I got the bigger brush and this one is faster than the one I had before. One thing I learned with the other Oral-B is that if you put the holder on the charger with the toothbrush attached it will drip water onto the charger and eventually corrode the base away and the machine will fail. I remove the toothbrush, put it into a small glass, then use my towel to wipe the holder dry. That eliminates the problem.<br /><br />The price has come down since I first bought this. Many years ago the first one was at least $60 and the brushes were $8 each for 3 at wallyworld. But they are greatly superior to the traditional brush. My dentist commented how clean my teeth were, especially around the rear teeth where the traditional hand longitude brush couldn't reach.