I brush after ever meal but almost never floss; I waterpik instead. My dentist recommended it because I have space between 14 and 15 (every tooth has a number 1-32) where food sometimes accumulates and you can’t reach it with regular brushing.
When used correctly and regularly, the waterpic is just as good as flossing—maybe even better! My dental hygienist says if you waterpic regularly, you don’t need to floss.
I have an Ultra model in my bathroom and keep a portable/travel one in my office. When I go out of town, I bring the travel one with me. The Ultra model is really good because you can adjust the power of the water jet. Turn up the power to get deep between teeth and reduce the power for teeth and gums that are easier to reach or more sensitive.