You will most likely get more enjoyment from the Thunder Tiger. They are considered to be a set it and forget it engine.

If you are into racing and need all out power and speed, then get the Rossi.

Typically, racing engines are tempermental and a lot of trouble. They don't throttle well. Typically they quit when throttled back after running wide open. If you were an experienced perfectionist and needed a racing engine, then you and the Rossi would get along just fine.

Enjoy the TT,

Jim