I'm waiting for my RR wheels to head across the pond and have been trying to decide what to mount on them. Since we're on the topic of tires here already have you ever considered the 140 series K60 Scout? It seems, from my minimal research, to be a different beast than the 150 series (which I'm not fond of). The TKC has never let me down on any bike but there's always a hunt for a better mousetrap so to speak.... Even with a K60 (or whatever) on the rear I'd probably still stick with a TKC up front. I trust that tire and while I don't much care what the back end does I like to know the front will stay planted.