I REALLY like the Bridgestone Duravis R250's on the trailer. On the flatbed, we would blow a tire EVERY damn time we went somewhere.....without fail. These weren't old tires, they were just the crap that you get at Walmart, etc. They were in the correct load range and size but one of them would fail every time I had the BOMB'r on the trailer. Ever since putting the R250's on it, haven't had a single issue and it's been used on for anything and everything. Hell, they're hardly even showing wear on them.
Now, on the truck, it'll be getting some Michelin LTX M/S2's as soon as these General's need replacing, which won't be too far off. I think the only others I'd consider are the BFG Commercial TA's or Firestone TransForce HT's. The only issue with the last 2 is there is no warranty, where the Michelins have a 70k warranty on them.