I maidened mine on Monday, and it is no longer a Twist... it is now a riot!! I love flying this thing! It was a little windy, and when I landed it would just settle in, touch down and roll about 1'. It comes in sooo nice and slow. Right now I have an OS 46 LA with an 11x6 prop(APC) and it seems to do o.k, at least for the stage of flying experience that I have. No unlimited vertical, and it won't hover, but it does everything I want it to. Maybe when I'm more comfortable I'll put something bigger on it.
Mine knife edges great without any mixing, although I'm still working on keeping it in a straight line. Maybe that's what the mixing would be for??