In my opinion, I would save the cash and go with the 08/09.
Brakes - I chose the C14 in great part because it did not have linked brakes. Nothing I've heard or seen on the 10/11 C14's has changed my opinion.
Traction control - nice
Display control on handlebar - nice
Mirror position change - nice but fixable on early models
Fairing change - style & heat control - no biggie to me, heat fixable
Larger stock windshield - I use both factory sizes, so no difference to me
ECO mode - nice
Ambient temp gauge - nice, but fixable
Speed limiter - not nice, but no biggie to me
There are probably other considerations, but the brakes and the price would leave me with an early model. If mama kaw puts real high-performance linked brakes (or un-links the ABS) on a future model, I might consider re-upping. As is, I have less than 30k on my 2008, and expect to keep it at least to 50k, and hopefully 75k, so my input may not mean much.