The V10R-Pro I have is pretty fast. Faster than some of my Monster Stocks. But not as fast as my best MS... yet. I would agree that the comm needs cutting often. Thing is, on the Integy website... it says my motor is a Torque motor. But the instructions say mine is the Ultra High RPM version. So I don't know... V10- Pro is suppose to be High RPM. But then again the V10 is 2002. V10R is 2003... and the new V10 turbo is 2004. I'm still working on the motor. So we'll see.