I have 1 and I also fly profiles. A properly designed profile from 1 of the top companies ( Swany's House, OMP, etc.) will fly circles around the UCD. It is a GREAT slow flying sport aerobatic airplane. Easy to land, flies inverted as well as right side up, good rolls, loops etc. When you start trying to do any type of pattern or hard core 3D you will fight the design. It doesn't knife edge well, doesn't harrier well and doesn't track very well just to name a few. I really like mine but it is more of a lazy flier than a hardcore pattern or 3d machine. Mine has a Saito 82 and flies great with it with tons of vertical power.