I originally had an old (20 years) .40 OS FSR on my magic. With standard servos/batt it came in at 4.1lbs. It did have unlimited vertical but barely. I crashed when the plane fell out of a hover, the .40 didn't have the umph to save it. After rebuilding it, I put a Royal .46 in it with a 12.25x3.75 prop and it is much more fun to fly. I am still learning to hover but when I get in trouble full throttle yanks the plane vertical. The .40 is fine but for me (still learning to hover) the .46 gets me out of trouble.

George