I bought this in December and have been so happy with it. Not only does it work like a charm and remove food particles that flossing and brushing missed, it makes my mouth and breath SEEM so much cleaner. My wife wears invisiline braces and she loves the job it does for her, as well. On a Jan trip to my dentist, I told him of my purchase and he was thrilled that both my wife and I are using the machine and was very complimentary of Waterpik. I strongly recommend this product to everyone... it's AWESOME! Nothing but thumbs up!!!!!!!!
Happy but not thrilled, I bought this to replace an older model & expected less leakage when in use. I also find the on/off switch could be on the instrument to make it easier to control