I have run Michelin ATX tires and really think there a good tire.

Then I also have run BF Goodrich all terrian radials which also lasted a long time on my old ramcharger, seems like a good choice for jeep.
Are they the cheapest? doubtful. But I think they are a good value tire,either.
Cheaper tires you will get less mileage out of, both fuel mileage and rubber mileage, imo.