If true that the '12 models have been substantially updated then this is potentially worthless.
We rented a 4 door '11 Wrangler in Maui. For a change of pace it was really fun especially with the huge removable roof panels. It had 7K miles on the odo and was pretty rattle/squeak free though the brakes had a bad vibration at higher speeds. IMO as a weekend around town car great but it would grow old real fast if I were in it daily or long distance. MPG was horrible - as expected - but to it's credit better than the wife's Land Rover.