I bought this water pic a few weeks ago. My old water pic finally gave out. This new one cleans my gums & teeth much better. I use the round brush, gum cleaner, and regular pic. I am very happy with my purchase.
I have had the WP-100 for about 1 month. This is my 4th WP. This one is very good. As in the past, my mouth feels very clean after use. Since I began using the WP, I always have good checkups with my denist. I wish the reservior held 800 - 1000 mL. Otherwise very good.