R1200GS, which year is betterest?

I would like to have a GS, I've had an X-Challenge and a 2008 GS(shouldn't have sold it), but I'm looking to keep a GS as a second bike so I don't want to spend a ton. Is there really any significant differences in the 2005 - 2009 range that would make one a betterer choice. The GSA is out of the question, I'm getting too old to horse one of those puppies around when I fall over. It would get used about 90% highway and 10% dirt. By dirt, I mean dirt roads, not singletrack...

Just asking, cause I'm a noob when it comes to BMWs.

Thanks:

California

'05 - '06: whizzy brakes
'07: last of the "old style"
'08-'09: "new style" with different tranny and 5 more horses
'10-'11: overhead cam

For me the best would probably be an '07 because I like the looks slightly better and don't care about the 5 extra ponies. But I'm also still perfectly happy with my '05.

What's important to you? An '09 will still have warranty left.

better to post in Hexheads section, as you are only (apparently) looking at R1200 models?
mods?

looking in the hexhead section was a good idea, I've found a gob of good info there, thanks.