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.
Just bought this replacing old one that leaked. Waterpik does an excellent job, however, it is noisier than my old one. Have to put a wash cloth under it to absorb some of the noise!
Very disappointed. I bought this to replace my old WP100 flosser which we liked. This new model is much louder than the old model. My wife cannot stand the noise. I am returning it today.
It is like the refreshing, clean, healthy feeling that I used to get with the old-fashioned cleaning at the dentist office. I use it several times a day.