Great tire for off roading but pretty noisy on road. The BF will definatelly be more quiet but I haven't used it off road so can't tell. However, if you don't mind the noise the STT is a great choice
I've had them for 4 years and had no issues. However, as mentioned above, they are noisy. The BFs are for sure more quiet. As far as grip goes I didn't notice much of a difference