Why pay for more for a 10+?
I personally (maybe I'm alone) think the lines of the 08/09 bodywork is far better looking than the 10+, the front fairing on the 10+ to fix the heat problem (which IMO doesn't exist, at least here in the PNW ) is kinda ugly and doesn't follow the lines of the tail, looks odd to me...
I mean, come on, look at the 08/09 lines, don't try to tell me these don't flow better...
Plus the 10+ has linked brakes, which again IMO aren't the greatest to have...
i like the fairings on the 08-09, too, but i don't think the ones on the 10+ look any worse. as far as the heat issue, i guess it depends on the rider and the location, but it's a common enough issue that Kawi redesigned the bike. standard heated grips and i believe additional features in the multi-function display as well (someone correct me on that if i'm wrong) are also new on the 10+'s.
the linked brakes seem to be a preference thing. i would probably prefer the ability to un-link them, but i haven't noticed any negatives of having them, yet.