Wasn't trying to bust you. I'm currently flying the GP 300 and have a Goldberg kit to build when the GP is either worn out or meets an untimely death. I was interested in what I had to look forward to and your statement sounded like you might have the inside scoop. The GP 300 will easily hold a knife edge, at least mine will, but it does take a good bit of aileron and elevator input. It will do a knife edge loop if I don't chicken out on the last quarter of the loop.