I've been looking at the difference and waying up which mont to buy between the 05, 06 repsol and the 07, all of which I am sure you can buy in the uk. I am not saying I know all of the changes or that rumours I have heard are factual, but just what I have found out reading posts and talking to people. 05-06 heard there was a little agro on a selected few with an internal bolt on the kickstart mechanism, which can result in damaged casings. I believe this has been altered on the 06. The 05 clutch was generally commented on as being very sharp and has been changed on the 06, I have been told that some 05 where called back to the dealers to have a new fan motor fitted which I assume was rectified on the 06. The changes for the 07 are listed on Sandifords site, but they are not huge (new bars quieter exhaust). The 06 repsol has loads of bling sandifords site lists it all. So not a lot of change at all from 05-07 but wasn't the 315 the same just subtle differences each year that added together made a better bike.