I have the YS110 with hyde soft mount, and Dubro tank repositioned at the CG. A winning combination. It flies rock solid in wind over 25mph and is quite capable of handling the sportsman and intermediate level AMA sequences.

I would pick YS110 again if I were deciding an engine for VII, because of its torque and throttle response. This has been proven in my recent win in local AMA pattern competition. Besides, the YS110 has good resell value if you decide to move up. RCU has very good YS maintenance threads in case you need some tips.