The WP-861W is a replacement for the older Waterpik I've used for at least fifteen years. I got this one because it comes with both a Waterpik and Electric toothbrush, and they both do a great job of cleaning my teeth. coincidentally, I had my semi-annual cleaning today by my dentist and he found no cavities, and it took him very little time to clean my teeth. The toothbrush comes with three different cleaning modes, but I've only used one. I highly recommend this Waterpik to anyone who cares about dental hygiene.
My husband and I purchased this product after my husband had a long overdue dental appointment. His Dentist recommended this Waterpik in order to help heal his gums and keep inevitable tartar at bay. We watched several YouTube videos about the waterpik. After using it for the first time, we were amazed at how clean our teeth, gums, and tongue feel.
I have had 2 water-piks, and when the last one retired, I chose the flosser and brush combination a month ago. I think it does a good job, and will know next week after my visit to the dentist.