Simon Knowlson is going to race his 748RS this year in the 600 open class with North Glos club, his bike puts out around 114bhp at the rear wheel. John Hackett told me last Saturday the best he has seen out of one is 124bhp. Compare this to a kitted 749R like Butch's which I think he said is putting out around 140bhp then if you are out to win then the 749R is the one to go for but it doesn't come cheap. It does depend on what level you are racing it at and how much you are prepared to spend