get the r6 its a better bike then the gsxr 600, ive owned alot of jap bikes gsxr and yamahas and now own the 04 r1. ive riden the r6 and the gsxr but like the r6 alot if i were to buy a 600 it would be the r6 its a fun bike. the only bad thing about the r6 is if u drop it it will cost u, and the gsxr is a tank if u drop it it wont be that bad..........
good luck bro.