Also the radios for a typical trainer may not be "complex" enough to control some of the more advanced planes. Not enough channels (functions) available or you may simply need additional servos. You can move the "airborn" portion from plane to plane for a while but it will get old as it does take some time and if you also move the servos they may require realignment each time too. With a slightly more advanced transmitter that can store data for more than one plane (memory) and additional "flight pack(s)" you will find life a lot easier. This is something to at least look forward to.