I just want to improve period... there is only so much you can do with a high-wing, high dihedral, low-throw trainer ya know ..... the sig four star 60 was beginning to look good but i may be able to get a J-3 Piper Cub, 80 in wingspan, for 250, with servos and receiver so i think i'm going to go with that .... plus , it will work with the engine i already have .... any other suggestions