I know this will open up the debate, but I have wittnessed way too many ARB equipted vehicles take a strap some where on the trail because of lack of air pressure. I feel that compressed air is the hardest thing there is to capture, contain, and control that you can use on a rig. Air pressure at it's best is a temporary element and every moving part on the machine has the ability to eleminate it. That said, The ARB locker seems to be as tough and nearly as unbreakable as they come, and the ability to disconnect is really invaluable on some types of terrain, less valuable on other types. Rjlougee and I do different levels of wheeling although a lot of the same type of terrain, and even though I have run detroits front and rear for 20 years, I am unfamiliar with the pinion shaft slap too which he refers. I will make note that he wheels much tougher terrain than I do. I would be in favor of a selectable locker if someone can build an e-locker as mechanically tough as thr ARB, but on a trailer queen, I would go with limeted slips and call it a day.