Advantages Mid-range price, rechargeable batteries, vigorous "hygienist" type clean.
Disadvantages None so far!
I recently bought this tooth brush to replace a cheaper version i bought a while ago. The problem with the previous brush was that the unit that contained the batteries wasn't entirely sealed (although it appeared so) and the batteries got wet and it was in essence a disaster! There are no such problems with this tooth brush. Whilst this is a more expensive option for a tooth brush it is probably a more cost effective choice. You dont have to buy batteries over and over again to replace the old ones, the heads are well made and last a long time, much longer than the cheap ones on the cheaper ...