My dad had one. It does great blenders, elevators, flat spin, waterfalls. It will wing rock a ton in a upright harrier, with or without spoilers, at any cg. It is not real solid in a hover. It will snap, not bad, it's not a thick wing profile. He messed up a low hover, and somehow got it to snap into the ground.

This is just my experience. Others peoples results may vary.

Check out the toc 30% edge video. Does this thing harrier or what! You might have to right click and save as. Big file.
http://www.toc1.com/Video/Files/13.mpg