i've had pretty good luck with my Yokohama X-ATs, and my runner-up was the Cooper AT3-XLT (only because people said Coopers are notorious for death wobble on solid axle trucks, but everybody who's ran the AT3-XLTs said they've been fine).
Running Cooper Discoverer AT3 XLT LT275/70R18 125/122S E and they're great. No wobble, rides great, smooth, quiet enough. Two of my buddies ended up buying them and also love them. Got them installed for around $1100. I'm happy with them.
Had 2 sets on my Duramax, 1st set were 285/70/17 and got about 45-48k out of them with no flats, plenty of gravel roads, and about 25% of the miles were with a trailer in tow. The second set were stock sized and had about 20k on them when I got rid of it in M=! wearing great.
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