You have many options. I agree with previous posters. If I had to make a suggestion, I would recommend a brand new system ( Tx, Rx, batteries, charger). Even if it only was for one model. I use a Spektrum DX5e for a motorized sailplane and it works just fine. 2.4 ghz I would say would be a high priority. It's getting harder to find receivers for 72 hz. With an airplane you really want "full range" (if you can see it, you can control it). Futaba, Hitec, Spektrum are the big names for me and you cant go wrong. Also, even a low end computer radio can make life so much easier when setting up an airplane. You don't have to get a second mortgage on the house to get a good radio, but do your research and buy what fits your needs. You certainly don't need a high end radio, but you can still can get a good radio.