I purchased the WP-100 to replace an older model. The new WP is powerful that I only use a setting of 2 to get results to remove all debris between my teeth and under a bridge.
I bought my first ever waterpik a few weeks ago. I wish I had made this purchase years ago. It is fantastic, especially now that I have a bridge. Would definitely reccomend the purchase to friends and family.
I bought this two days after having my braces put on and what a difference in cleaning! I can't even imagine not having the Waterpik, I only wish I would've tried it much sooner. My husband really likes using the Waterpik too. I highly recommend this great little machine, it's very easy to use. My kit also came with a travel version that I'll be using on our trip next week.