Review (5/5): Great price, great toothbrush
At least so far. I have not had it that long. But it is half the price of the rechargeable ones, and has oodles of power from the batteries. The batteries on the rechargeable ones tend to die after a while, so you can go through two of these for the same price, and rechargeable batteries are easy to come by.
Now 7-months later. I had some qualms about this unit because of the reviewers who had them die by water damage. I would say it is probably not safe to leave this unit in standing water (like a cup that accumulates water in the bottom), but otherwise with normal usage and storing it dry, there was absolutely no problem. I use rechargeable batteries and they last well over a week using twice a day. I get the impression they go longer between charges than the rechargeable units.
I have had a lot of rechargeable units in the past, but at half the price and the same performance (without bells and whistles) I shall stick to this type. To me it is the best buy by far.