08 had some good updates. Tranny changes, steering head changes, a bit more hp than the 2007. I consider 08 and 09 the best of the breed. I'm not a fan of the camhead (too much stuff crammed into that head, and I like threaded adjusters, and it has that goofy flapper exhaust valve), or esa (I'd rather get fully adjustable aftermarket decent shocks). OTOH, I'm not a fan of the GSA (too damn big/heavy), and would get the regular GS 08 or 09.