I been using the WP-100 for about two months and like the feel and the job it does. It gets the extra food particles between the teeth and makes your teeth feel good all over. There is plenty water in the tank for a full teeth flossing. I like the extra water tips that comes with it and the 1-10 water pressure dial.
I am new at this but so far so good. I am anxious for my Hygienist to see if there are any improvements. I really do like it though and how it makes my mouth feel. Thumbs up so far!