red one is Sig Kadet MK II, an excellent trainer (with assistance)and any 40 size motor. this is a 40 size plane. any modern 4 channel radio will work. best if you have buddy box as well.the King Kobra should definetly be put aside until 2-3 other planes later.(Ugly stick,Four Star skytiger etc) it designed as an ADVANCED aileron plane -fast &quick for a good 60 motor, but actually forgiving more so than many of its type.excellent windyday flyer.