I like the way the larger planes fly, and they are definitely easier to see. The gas engines leave almost no mess on the plane. My only serious complaint about the glow engine is the oil getting all over the plane and eventually ruining the covering. If you have flown 60 size planes and feel comfortable with them, then a gasser isn't that much of a jump. There are considerations for the larger airframes- using strong enough servos and linkages, higher capacity batteries, and of course having room to store and transport them. Hit a couple of big bird events this summer and you can find out just about everything you need to know before jumping into this segment of the hobby. Most of the guys will be more than willing to show you how they have set up their planes for good flying and safety.