The stock heli flies very well. The motor/esc combo kit is a bit weak, though- not bad, but not as powerful as I (and some others) want. If I had a do-over, I'd get the bare kit, a JGF 500TH or Scorpion HK2221-8 motor, and a Castle Creations Phoenix 45 ESC.

Otherwise, since you add the rx, servos, batteries and gyro separately, they're just a matter of getting good ones in the first place .