IMO, Apples and Oranges here. For 3D, the U-Can-Do is the choice between these two. The Skybolt is a fine flying airplane, and will fly with the 80, but certainly will not hang on the prop at less than full throttle. I had a YS 120 in mine (kit built and lighter even than the newer ARF) and it did do nice torque rolls and such with reserve power with that engine. It is a bipe and thus heavier and 'dirtier'.