Billy, I would not recommend the Hard Bet Mk III, because of the touchy elevator. It is only for the very experienced Fun-Fly pilot.
The Aeron is very aglie and quick. I have a buddy that bought one for his third airplane despite my recommendation against it. He said that he could do manuvers so easily, i.e. knife edge, hover (up high), flat spins, etc. The only problem is that he got over confident, lose orientation, and would lose it. This is easy to do with the Aeron because it is so quick.
I would suggest the Wacky Bee III. The Wacky-Bee III will perform every 3D manuver that you can think of, though is forgiving. You want the high Alpha knife edge, knife edge loops, climbing inverted flat spins, climbing tornados, upright flat spins maintaining altitude, harriers, torque rolls, etc. etc.

All of my designs will perform the above mentioned manuvers and ones without names. I pride myself in that. I design extreme Fun-Flys for what is known as 'Stick-Bangers', because I am one. It is unfortante that we could not meet when you were in the area, but maybe next time.
I hope that this helps you out. If not, let me know.
Kevin