I have the MVVS 2.15 engine in my Hanger 9 Edge 540. It's a real nice engine. Runs great, starts easily. I little heavy for it's size though. I'm selling mine soon and putting either a ZDZ 40 or glow into the edge. I want it to be light! The ZDZ is much more powerfull, 40 vs. 30 size, but weighs 8 oz less. It is also around $100 more though. If your bent on the MVVS, I can save you a few bucks if you want to buy mine.

Good luck with whatever you decide.

Cheers!