Best- Tunze. But you pay for it. I like my Seio, but it's a little bulky. Koralia seem like good, affordable PH,s and come w/ magnet mounts. As Roka said, MJ PH's produce a jet stream of water. They are cheap and last forever though. The koralia, tunze, and seio have large, gentle flow patterns and use less energy. That seems to be the design of the "new generation" of PH's.