When I'm eager to get a plane in the air, I choose a two-stroke, because they're easier to set up, get broken in and tuned, and require less maintenance. If I have a few planes already flying and have time available to putz around with a new model, then I like a four-stroke (especially the pumped YS and OS). If you're going to be in this hobby more than ankle deep, you have to acquaint yourself with four-strokes sooner or later. There is a definite learning curve with four-strokes beyond what you know from two-strokes. If you're ready to step up now, go for it. If you just want a plane to fly, a Tower .75 will pull your 58 inches around like gangbusters.