Yeah I've been thinking about that (2 vs 4 stroke). There's a 110 Rascal at my field with a four stroke, and it really fits. Unfortunately I think I would end up getting an OS55AX (don't know how unfortunate that really is though!) and putting either that or the 46AX in the Rascal, and the other in my Dolphin.

I'm really hooked on OS engines, and for some reason don't want to get the Magnum .70 that a bunch of people at my field have. Of course I see them having a tough time starting and adjusting needles, and the OS AX series is the most forgiving thing I've met since God.

OS 55AX with a 12 or 13" prop would be nice, on any plane...