4.10 or 4.56
agreed.. get the tires first and see if you are over thinking things. I have 35s and 3.73s and don't have any complaints whatsoever... i've heard similar statements like the one i quoted.
If you're going to drop the money, I personally would go 4.56 rather than the 4.10. Especially if you ever wanted to tow something or get into heavier duty wheeling. Not to mention, most people always eventually want to go to a bigger tire. Rather than have to pay to regear twice, I'd set it up so you can always upgrade to a bigger tire if you wanted. Less money you'll have to spend in the long run. Once you start upgrading your Jeep your mind might start changing a little or a lot on things down the road. I'd rather be over prepared, than under prepared.
If you're going to drop the money, I personally would go 4.56 rather than the 4.10. Especially if you ever wanted to tow something or get into heavier duty wheeling. Not to mention, most people always eventually want to go to a bigger tire. Rather than have to pay to regear twice, I'd set it up so you can always upgrade to a bigger tire if you wanted. Less money you'll have to spend in the long run. Once you start upgrading your Jeep your mind might start changing a little or a lot on things down the road. I'd rather be over prepared, than under prepared. 
I have a '12 JKU Auto, I went with 4.56's and I'm running 315/70-17's (34"). I love this set up. I live in Flatland Florida and I see an average mpg of 17. I really like the pep and overall performance of the 4.56's. I'm sure you'll get a hundred different answers to this question and this is just my personal experience and opinion. Good luck!


