This is the third waterpik that we have had, they tend to last about three years before they need replacing, which is pretty good value with two of us using it daily. you soon get used to the technique needed and avoid splashing the bathroom ! we only use ours on the lowest power, which is plenty powerful enough. once you have used a waterpik you will never go back to floss !
About a month back, I bought this after my dentist recommended it to me. I have some deep pockets at the back which tepe brushes and regular electric toothbrush were not improving. I am still getting to grips with the best technique, but today I had a check up and th hygienist sees improvement already. Needless to say, I'm delighted and very motivated to persevere and improve my technique.