I see Toyo has a new tire called the Open Country R/T Trail. If it has a stiffer sidewall than the Nitto it might be the ticket.
That tire is a Les Schwab exclusive... they are touting that they designed it and are having Toyo make it for them...
you see over here in Oregon, they are selling quite a few of them. May be the fact that they are a little cheaper, than Toyo name on the side wall.