I can't follow where people think one person's tire choice leans toward "poser" and some other guy's doesn't in this thread. A "poser" to me is the guy on TSL/SXs that are nearly burned off from endless time on pavement yet he doesn't even have discos and his lift consists of blocks and longer u-bolts.
Those STS would be desirable in more than a few places I can think of, especially if I get to make my trip up to northern canada (tundra and lots of millions of year old surfaces of ancient rock, as well as a good amount of time on snow and ice). So I'm actually considering them.
Now that that's said, I ran the MT/TRXUS on my jeep up until this latest buildup (in progress) and the idea of that trip. The MT/TRXUS were tough and still rode well on pavement, they were a mpg improvement over the TSL/SXs I ran before them, and not a tremendous loss in grip. Sidewall cut durability was right up there. I'd recommend them over the STS to all of my friends around here, but that's because of what we wheel here.
Run what's best for what you'll do on them.