The Ultimate 10 dash 300s has a lot of wing area, and because of the size and light weight of the aerowork's Ultimate the wings are thinner to allow the plane to brake cleaner in maneuvers like snap rolls. I blew up a GB Ultimate to 1/3 scale, and I wish I had made the wings a little thinner. Even with the CG back it mush’s through snaps. Airfoils become more efficient the larger they become IE the larger and relatively lighter the plane the thinner the airfoil need’s to be in order to maintain similar performance (snaps/spins/3D ext.). Hope this helps.