Previously, I had a separate water pic and toothbrush. Thus unit combines the two into one unit and I love it. Also the high power on the toothbrush makes me feel like I'm getting my teeth really clean and I am because I just got an A+ grande from my dentist on my last cleaning!
I bought this because my new dentist recommended it. I'm a going to be getting some implants. I've been using it a month now. I think I only have it set on the 3rd setting and it does a wonderful job. Make sure to read the instructions or you'll wash your face with it like I did. Now it doesn't happen anymore. It comes with several heads to get the job done. Lots of power!