Would like most to see the water reservoir about twice the size. Quieter would be nice too. It's quite loud. Also the lid w/storage should snap shut and stay closed. Otherwise I like it.
I bought this about one month ago to replace an old (15-plus years!) Waterpik that only needed replacement due to the coiled hose connection between the base and the handle that became brittle and broke. This new unit is quieter, has a transparent water tank allowing you to judge how much time is left, and has more (and covered) storage space for tips in the tank cap. Nice upgrades over the old model.
Do you want clean teeth and plaque attacked (as in held in check). Just do it ! Easy to use (yes, easy, or you are too finicky). Got pockets ? or beginning pockets? What are you waiting for. (used to use the s...care flosser - think about it ! stop fooling' around) The real deal :) Don't look at the ratings (silly). Read my lips (yeah, I say my gums) - get thee to this device! (Stupid stilted language due to this site's edit...ing of this review)
This is my third WP after many many years of WP use. I like the current compact design and the lower sound volume. The smaller reservoir makes it much easier to empty the excess water.