I've run:
Falken Wildpeak At3's
BFG KO's and KO2's
Nitto Terra Grappler
Continental Terrain Contact A/T's
Toyo R/T's (not an A/T but close)
My overall pick is BFG's. They perform well in most conditions. I even plowed a winter in them. They are not the quietest, but they are not loud and in my opinion are the "standard bearer" of good looking semi aggressive tire. The Toyo R/T's made a weird resonance on the highway. Looked great, but it ended there for me. Duratrac's were ok a little on the loud side. It's been over 10 years since I ran those. The Nittos and more so the Continental's were barely an A/T. They were good quiet tires and road very smooth, but not aggressive looking enough for my liking. The Falken's were a very good tire. Looked good and price was right, but I found them to get louder over time. Certainly not mud tire loud, just louder than they were when new.
I'm hoping to try Kenda Klever's on my stock 22's in the spring. Big 22" tires are just so darn expensive. If I decide to pay up, I'm going to try to the new Toyo Open Country AT3's.