X 2 to the above posts tufflux, and yeah got the BF KM1's for play, so they are differnet to the KM2's, cant say i have any experience with the bighorns mate sorry, however mate has buckshots and is happy with them, however they do wear away quicker than mine but i think they would be tit for tat with the km2's as they are a softer compound.
And sorry boys i have had these for just over a year not two just had a look at the receipt! but yeah put a few K's on em and they are holding up great, especially when you drop them down low like mmaaxx said they just grip and grip, and dont seem to pop on some pretty gnarly shaly rocks out around the great deviding range up here!
also good to see your progress with that truck of yours mmaaxxy! what no SAS yet??!!