If you go for an r6 the hottest year you can get are the 05s. 2005 was the first year they were fuel injected. I don't care what the manufacture numbers say. I had a Vance and Hines full pipe and a power commander on mine and I ate r1s for breakfast. If you ran each bike till they were flat out the R1 would win but from 10 to say 175 I'd stomp them. The r6 untill recently had a frame design that made them easy to ride wheelies! Like 3rd grear half throttle just snap your wrist and go. No other bike I have ever road even came close.