For me, four strokes have great aesthetic appeal. But, my Webra 1.20 is proving to be cheaper and easier to run than my Saito .72. The larger two strokes run at comparable speeds to the four strokes and turn big props slower. It also depends on the airplane. If you just want to crank and fly, I have to give it to the two stroke. I'm more concerned with improving my flying skills than tinkering with my engine.

Don't get me wrong, I love four strokes. But, for cheap, reliable, crank and forget it flying, I'll buy a two stroke.