Yeah, I wouldn't trade either.
Back to your original question.
For a good deal and super good, proven over the years tread,
I would by the LTB- It is the TSL tread, slightly more aggresive lugs, same tread pattern though. BIAS ply which isn't great for on the road, but since your rig is for the trail no problem there. BIAS are super tough, and I don't think they blow beads as easy as radials. THe main perk to them is they are almost half the price of the TSL radial.
I have heard people like the IROKs, personally I think they arent as tough or aggresive as the TSL/LTB.
And they are like twice the price of the LTB. I have heard The LTB isn't U.S. made though, that is the down side.
Any luck finding a swamper in stock? I have had the run around from the dealers, still waiting on the factory to open and start making tires again.