I purchased a WP462W unit approximately three weeks ago at the recommendation of my dentist. I am dealing with the results of Bruxism,which was undiagnosed until recently and my current dentist felt that the increased level of cleaning would be healthy/helplful in addition to the dental-night guard. I am very pleased with the new levels of cleaning that I have achieved with the Waterpik in just the past few weeks.I use the unit after each meal and am actually looking forward to my next checkup.
I bought the Waterpik about a month ago....I was excited because it is a Cordless and I thought I would like it better. The only problem is the reservoir is not large enough to hold enough water to clean my entire mouth. I have to fill it at least twice each time. Not sure what I was looking for but I will use it until I can afford another one.