I just wrecked my first micro heli, a $22 toy version. I had so much fun that I want to get a real r/c heli. After much reading, I've narrowed it down to the esky lama v4 or the esky e500. I want to fly indoors as well as outdoors. My 11 & 12 yrs olds will be learning as well. Any help deciding would be greatly appreciated.