I have been using 32" Maxxis Buckshot's for 2 years now. They are an excellent mud tyre but wear very fast on road. In those 2 years i have lost 3 tyres due to sidewall stacking from tree roots. I always let my tyres down to about 24psi in the bush so they have plenty of flex. I don't have any personal experience with the Bighorns, they look great, but i know the BFG's have triple sidewalls so i am thinking of changing to BFG's in the future. Let us know how you go with the Bighorns, i'm keen to see how they perform in the bush.