I've been riding my 650 GS on TKC's since June....(had Tourances before)...when I need new tyres, I'll be looking at TKC's again....I think they're great, on and off road......
I'm a bit disappointed in the off road side, so will try MT21's as suggested by a number of other guys.
On road they are good up to a level. They're no Conti escape on tarmac but hey it's gotta be a toss up between on and off. TKC's are at the very least fairly predictable.