One of the mechanics at the local HD store told me that by 2013, all bikes will be water cooled, as mandated by the EPA. Only time will tell.
My bike is cooled by Jack Daniels. When it gets hot, I stop at the bar, have a drink or two, and then she's nice and cool again. Simple enough.
I'm surprised they have not put the Revolution enginein a touring configuration yet. I keep hearing about it. Just have not seen fruit. I'm happy with what I have, but would be interested to see what they come up with...