I've been running these tires for almost 15K miles and I have been really happy with them.
They are really good on-road...nice and quiet at highway speeds, maybe slightly louder than stock but not noticable.
Off-road they have handled everything I've thrown at them...slippery rocks, sand, dirt....no real deep mud yet.
You won't regret your purchase.
That being said, will I buy again? Probably not, for 2 reasons,
1 they are like 61 lbs a piece....yeah...
and 2, they just aren't aggressive looking enough for my taste. I'm going with Duratracs the next go around, but I've been really really pleased with the Wildpeaks.