My Dentist in Arizona recommended this as I have border line periodontics issues. Mostly 4's and 5's even though I flossed nightly and used a sonicare toothbrush twice daily. Now include using WaterPik twice daily and Listerine Mouthwash afterwards. I have been to two other dentists since then and each six month checkup has shown most pockets to be one and two's with only a few threes. I have no bleeding from cleanings. This has extended the time period between visits to the dentist. I love it.
This version weighs less than its predecessor but accomplishes the same goal. The one complaint I have is the cost of the black colored version is more expensive than the white.
My hygienist has been telling me to get a Water Pik for two years, and my excuse was that it would take up too much of my limited counter space in the bathroom. Then my wife fell and ended up with a cast on her hand and wrist which prevented her from flossing. After discussing various options I mentioned that the Water Pik can be used with just one hand. We bought it on-line and two days later we were using it. I did a number of tests to see if it worked as well as my sister-in law said it would. I double flossed, brushed my teeth with a SoniCare electric tooth brush and then Water Piked for about a minute. I was amazed at the amount of junk that was still in my mouth and washing down the sink drain. Highly recommended and it really didn't take up that much at all.