Well, here's a
tire rack consumer survey that shows some of the A/T tires in my specific size...
Consumer Survey Results By Category
The Yokohama's are rated #7
The Firestone Destination's are rated #1
The Toyo's aren't sold by
tire rack, so they're not listed. The Silent Armor's seem to be a pretty good tire, too. All in all, the point spread and percentage that shows one tire being better than another isn't very much. The top 10 are all pretty decent tires. It seems to be a matter of personal preference.
I certainly have a lot more research to do!