I have a C H ex330 and put a thunder tiger 120 on it .It has good vertical but not what I would call unlimeted but it does do the job,I had a little trouble with the balance not sure what the cg is exactly but got mine to balance at 4.5in from the leading edge.I used standard bb servos on the elevator and ailrons and high torque on the rudder .it is a great flying plane for the money.it weighed in at just under 10 lbs finished weight. They could have done a much better job on instructions.