Review (2/5): not impressed
These are harder than Sonicare's regular brushes and harder than I prefer. I noticed no difference in how clean my teeth felt or looked. I floss regularly and I don't think directing a flow of water can do the same job of removing debris, so for me, directing water between my teeth probably doesn't do much except make it easier to accidentally splatter. I also missed the inner rows of brushes that the rubber paddles replace and I know I felt the difference. Unless I see some hard evidence to the contrary, I'll continue to suspect this is just a marketing gimmick. I'll stick with the regular brushes.