... only been using 1 so far and it works great, and it's as good or better than a ...
I've only been using 1 so far and it works great, and it's as good or better than a genuine Oral B brush (of the same size).  It'll probably take me about 4 years to go through this pack, so maybe I'll update my review in a few years...  or if my opinion changes, of course.
Rating: 5 stars