i say stick with the MTRs. ive had them in sand some mud and in general grass, they do awesome, no complaints. and for a mud tire on the road in rain/dry conditions they are one of the better tires ive had, match right up with my revos.
ive never used BFG muds, but i love my MTRs, and everyone that sees them are like "dang, you got some good tires, i bet those cost a pretty penny."
"****, i love those tires."