Tire, warranty? Lol
Tires are tires. Find the size, load rating, price, tread pattern you like and buy them. Anyone who says one tire is the best and the other is junk is mostly FOS. Yes some wear better due to tread design or compound, others get better traction, etc. Generally cost = quality, but there are some deals to be had.
Here's the quick n dirty guide to tires.
If you're an AARP member or collecting a pension/social security, Michelin or Bridgestone are your best bet. Unless you want the other cronies at the diner to make fun of you.
If you're middle aged, normal dude, who does a little bit of everything with the truck and you're past your midlife crisis and don't need to measure d!cks with the kid down the street on 40" boggers, then a nice AT tread is for you.
If you're a rugged outdoorsman who may climb Everest one day and race the Baja the next, then a burly set of MT's is your tire.
If your hat brim is flat and your truck has an 8" lift in front but only 4" in back, then buy the same mudders as the outdoorsman, but make sure they're stretched out on a set of American Force rimz and they come with a lifetime supply of Armorall.
Let me know if I can be of further assistance!