Kangke makes a plane called the Fun-50. A good 61 will give it unlimited vertical, It has HUGE control surfaces and is very light. I've seen it do blenders, harriers, torque rolls, and a knife edge loop. It's a minimal structure design, with wire landing gear. Check it out it may be what your looking for.
I have their Cap Sport, its also a good 3-D plane but needs a strong 75-91 for unlimited. Very nice construction and covering, lousey hardware.