Almost any radio system will work with the Mini Piper but I highly suggest that you forgo the Hobby-Lobby's recomendation and buy a Laser 4 or something. Make sure whatever you buy has at least 4 channels and, if you go with a Hitec system, hs-55 servos! Standard servos are way way too big, they're the blueish looking servos. Anyway, on the radio, you may not be using one of the channels it features, but it beats spending $180 because your second plane needs 4 channels.

Mini Pipers are great!