I have never owned a waterpik before but I found this one easy to use and very effective. I never run out of water and I can adjust the pressure to suit.
I'm a RDH and have been recommending it for my patients for years. I mostly recommend this for my patients with lots of restorations: bridge, crown, implants. It's a very useful tool especially when there's a localized gum inflammation that's caused by food or plaque. The only downside about this product is that it's VERY loud during application.
I bought this after a dental appointment. I was looking for another way for my family to regularly floss to prevent gym disease. The variety of attachments are helpful, although I have only used two. The water pik is easy to use. Our disabled daughter nis becoming accustomed to it. Just remember to press the pause button . Otherwise water continues to spray.