I've had the pro comp MT's on my jk for about 3 years. They have not let me down at all. Great in the rocks, and the mud. They do well in the snow, and bad in the ice. They are pre drilled for studs if u need. They have chunked a little bit due to rocks, but overall I would buy them again. I run about 25 psi for the street, and 12 on the trail.
My next tires will be 37's Nitto mud grapplers.
Oh and the noise... It's no more noise that the stock rubicon tires.