The most important thing is to find something that you'll use regularly. If you find water flossing easier to do daily than manual flossing, that's more important than which is better at cleaning your teeth.
From my convo with the dentist (N=1): flossing is better. But anything is better than not doing anything.
Incredible for post-popcorn, and for $10 nowadays a no brainer. I still find floss does a better job at scraping the sides of the tooth vs water flossers for dislodging.
I got one recently. Felt like my teeth have never really been clean before.