Review (3/5): Could use some improvements.
The Ultra Plus Water Flosser could use some redesign, particularly on the wand handle. The button to remove the attachments can easily be pressed by accident. I liked the old Waterpiks that had a collar release. Also, the sliding water flow on/off switch gets stuck and you have to turn the power switch off to stop it. No tongue cleaning attachment but several attachments that I will probably never use. The Nano Flosser is much easier to use even though it only has three power settings. But, as with the Ultra, too many attachments that I'll never use and, again, no tongue cleaning attachment. It was a good deal getting two Waterpiks, but I really wasn't fond of the Ultra.