I like my Typhoon too, and recently changed the wing servos to some Futaba S3102's I had around, and put on some sfg's - big improvements all round when it comes to silly maneuvers. I agree that a slow loop may easily turn into a corkscrew, and knife-edge is hard to hold - easiest to see what's happening when it's going away from you, put that quickly introduces the problem of disappearing.

I think that the basic airframe is pretty crude, so you are always going to find that its behavior is not completely predictable. I find that experimenting with flaperons (although unnecessary) is difficult. The right setting for flaps/elevators doesn't seem to exist - it either wants to climb into a loop, dive, or roll over. However, on another note, I programmed a mix that moves the ailerons down (up to 40%) as the elevator goes up (and vice versa) - VERY tight loops, and thankfully, so far nothing has snapped off.