If you want a good 3D model don't hesitate to get a CAP 232, these will outfly an Edge 540 any day in 3D.
I fly a H9 Edge in IMAC and 3D (although its not been in any comps yet) and it's a pretty good 3D trainer, small enough that it doesn't need top everything, mine actually has 148s all round and will do the best of 3D pretty well!
My ultimate seems to enjoy torqe rolling... you may find the same.
Good luck