In case anyone is interested I got a UC3D 40... I got a great deal on one in the bones. It can from Tower's scratch and dent section with some minor damage. Most of the covering was stripped off and the damage was all repaired. I am thinking of put my MDS .58 with an APC 13X4w prop. I have the YS 63, but I think I'll ask Santa for the Funtana for Christmas. I just might be able to compare these planes side by side...