You need to decide what you're going to use your Jeep for, and what you are going to need from your tires. If your Jeep is a daily driver than an all terrain tire is probably best suited, Goodyear, BFG, and General make a couple of the nicest all terrains on the market for a decent price and in many different sizes. If you are going to do any rock crawling or more challenging off road trails or 'mudding' than you're going to want a mud terrain which again there are many different options, sizes, and manufacturers available.
Check out discount tire direct . com and online tires . com. Probably your best prices and customer service. Hope that helps, good luck.