I am buying an O.S. .40 LA for $30 off of the market place. I will also be getting the tower trainer. the radio system, i already have - futaba 6 channel... it's my brother's, he has a sig electric plane but he hasnt finished it and probably wont work on it for a while so the radio sytem will be used for my plane. so i think im set on a trainer. right now im practicing on the Great Planes sim. G2.