I have been flying my Seagull Edge for a little over a year, and I am delighted with it. I have a Magnum 91 XLS turning a 15X6 prop. Take off at 1/2 throttle, full power gives vertical as long as you want, control response is excellent. The only major thing I did different from stock instructions was to place the servos at mid ship under the canopy instead of at the tail. Tail mounting required far too much nose weight to balance. I can readily recommend the Mag 91 2 stroke, however there are other 91's out there that will perform similarly. And at a much lesser cost than a comparable 4 stroke. Whatever you choose, I think you will like this plane.