I would have never thought of buying a Toyo tire. Not even on my radar screen, I avoid buying anything that even smells of being foriegn. (I know, I lost that battle a long time ago, but I still try) But when I bought my 93 Dodge D300 Dually, it had 6 Toyo open Country HT tires on it. I drove another 70,000 miles, fully load all the time, all over the USA, and never had 1 single tire issue. When they finally were wore down enuff that I didn't want to use them for winter driving, I bought 6 new Goodyears. (I should have known better, with all the problems I've had with Goodyear tires in the past, but they were cheap) My size is 215-85R16E. On a trip out west, one of the Goodyear steer tires started coming apart and shaking in the middle of nowhere, New Mexico. I bought a single Firestone Transforce HT, because it was all they had at that location. When I got home, I sold the 5 remaining goodyears, and put 4 new Toyos on the rear and another Firestone on the front. After 25,000 miles, I'm getting a little bit of weird wear on the edge of the Firestone front tires now, but at 190,000 miles, the front end of the truck is getting to be due for balljoints and tie rod ends, and I haven't rotated them due to the brand mismatch. I've used the Transforce before with no problems, but never kept the truck long enuff to learn how long they last.
So I would definitely and strongly recommend the Toyo Open COuntry HT for your use, and the Transforce HT would be perfect as well. I think the firestone is easier to get when traveling. They are both reasonably priced, but not the cheapest. Good luck!
TOYO TIREFIRESTONE TIRE