RE: Which radio?
I bought a Hitec Laser 4 for my trainer back in 03 for $119.00. I only planned to use it with that one plane. That is almost as cheap as just a flight pack. As I added more models later I bought a new trans and more recs and servos. I sold the trainer but reused the radio gear in my sons new trainer. Plus I have also let others use it as a buddy box. A lot of use for just 119.00.