I'm starting to look for a new boat and I want a jet boat 20-23ft. I'm still trying to decide how big I want to go, I honestly think 23ft may be too big. I want something for cruising the shoreline, pulling tubes, and generally having fun. My delimma is I want something fast but I want to get decent mpg while cruising around too. I've been looking at the Yamaha's and Sea-Doos. The utopia looks nice but I haven't found much on it for gph and how fast it goes top speed? I'd definately want the bigger motor. What can I expect for average gph and how does the utopia compare to the challenger 180 with the bigger motor? The utopia is the size I want, plus I'm guessing it's pretty fast with the larger motor but I haven't found many video's on it, are the challengers more popular? Also what are sea doo owners general thoughts on yamaha boats?