My only real gripe about the JK is that on the X and Sahara models that the transfer case gearing in lo range are not low enough. Mostly just first gear. When trying to climb over rocks and roots in tight turns I found that I needed a lower first gear. As it is our V6's don't have any low end grunt so we have to make up for it with lower gearing and it should have come with the same T-case as the Rubicon so you had lower gearing. So I'm looking into getting a atlas II T-case in the future. I like the Hi range so far and I like getting 22.9mpg with them, but that Lo range needs some help. That's pretty much my only complaint of any magnatude. There are some little things but I can live with them.