I like that it gets all your hard to reach areas, and if you have a receding gum line where general flossing can create even more of an issue this is perfect. This was recommended to me by my dental hygienist as an alternative less invasive means of flossing.
This is my second and third Waterpiks. I love what they do for my teeth. I did like the pik storage in the old system better. Having them inside the lid and the lid having to be removed instead of flipped up is a step backward. The hand held is a nice gimmick. It doesn't hold enough water for a complete job, so use it as a quick rinse before bed.