Have always had push & hold button for water; this time went with a slide button. Having used it now the slide button is too hard to slide. Wish I had the squeeze and hold button.
THis is my second Waterpik flosser and love it. My first one I used practically every day. When it stopped working after a very long time, I immediately replaced it with the WP-100. I've had dental issues due to lack of flossing when the tech suggested getting a Waterpik. I'm so glad I did - I get good reviews from the tech when I go in for my check-ups and will never be without my Waterpik flosser.