i was wondering which build was easier for somone that has never built a plane before (have done an arf). balsa usa 1/6 or 1/4 sopwith pup, great planes P-51D, or top flites's elder 40? i realy like the pup and i like the large size of the 1/4 scale, also have read that it is easy to fly. the p51 is ok but i kinda need somthin that cant take ruff terrain. the elder looks ok but im not to sold on it.