I don't care what anyone says, I loved having my 33" Pro Comp muds on my '94 Sierra 2wd DD.... When I had the suspension done, I had some 33/12.5x15 Pro Comp mud terrains that I got from 4WPW. I went with those tires because of the rubber compound that they use, they're very quiet on the highway, and stil have an aggressive bite to them while (mildly) off roading (this was my DD). I just replaced them last week after putting nearly 60,000 miles on them - I AM NOT LYING. They had about 5-10% tread left on them, but it was time for new ones. Rotate and balance them every 3,000 miles (every oil change), and you'll get great wear and longevity out of them on the street. I have a buddy with MTR's on the Jeep, and he hates them, both on and off road (wet roads and muddy trails down here....no good).
If you take care of your set of Pro Comps, they will last you, and you'll get your monies worth - trust me!!