Well I've got a little uncertainty on engine choices here. I've got a Y/A edge 60/90 and I'm torn between a saito 100 and an O.S. .91 FX. Please help me decide. Which one will fly the plane better/better for aerobatics. any one having flown these engines could give me a little bit of a comparison. I know the .91 is a power house but what about the saito. Please help me. I'm starting to pull my hair out.