the rr is more of a track bike in my opinion, more aggressive seating position, bit more horsepower, faster in the turns.. while the f4i is more of a stable and comfortable seating position better for riding around not only on a track..in my opinion. Still a fast bike and does well on the track though.

i'm 6 feet 220 and i'm on a 2001 f4i and have no issues with it at all fun as hell to ride, reliable not a bad thing to say about it. i love it.