Tires and gears are the 2 biggest influences on your "performance" on road and off.
Key to the question is what will you do with your Jeep? How much off road? how much highway? will it be lifted? does it need to do 75mph on the Highway consistently? for a couple hour trip?
Once you figure this portion out the mistake of, wrong gears, or wrong tires, or too much lift, or poor gas mileage....you will know and figure out before you make the mistake of buying the "wrong Jeep" for you...just my .02