So I am looking to upgrading to a 600rr from my F4i, but I was wondering what the differences are between the 2003s and above? I am looking at a 2003 RR, but I was wondering if there was any reason to look for a 2004 or 2005 instead. Any info would be greatful. I was also wondering what a good condition 2003 600RR with 3500 miles should go for? Please let me know, thanks!