Review (5/5): Watch how you hold it!
The difference between this water flosser and the one I used to have is, I had to learn to watch how I was holding it so I wouldn't press the on/off and flossing mode buttons by mistake. Once I got used to them being there, it worked like a charm. I only needed to flip the hose around in the reservoir so that if I tilted the flosser towards the inside of my lower teeth, water would still be available. Solid purchase!