I think the ACE rails were the best investment ever. I've got a few "dings" in the side of my rails where some tool wasn't paying attention to how they were opening their door.Got the 3.73 with rugged ridge hitch assembly. JK came with 3.73 gears but no hitch.
Been running an Iphone mileage app since Jan still average 20mpg real time and correlates with the on board.
Avoid door dings.....use ACE rails