This is my 2nd GlossRay flosser and I’m still pleased with its performance. The only reasons for the 4 stars instead of 5 is because I needed a special adapter (in which I brought) and cleaning the water tank is hard because the lid is on so tight that it’s hard to come off. I’m older and my hands do have the strength they use to have, so I have to take something thin to slip in a little opening to ajar it open. But I know it has to be sealed tight so that water doesn’t leak out but still somewhat of a pain. However, I will choose this flosser each and every time!