I'll have to say WM Velox 60 size ARF. It does anything you can do.....Walls into hover into knife edge, snap roll turn around and harrier over the field, back into a hover.....vertical climb out. Nice big loops inside and out, cuban 8's, rev cuban 8's, flat spins etc.....oh, and blenders.
That's about all I can do....trying to do rolling circles.
Here's a pic..