My experience is with selectable lockers in my current 80 that has factory e-lockers. I have had ARB's in my FJ and Minitrucks. However, in my last 80 that had open diffs I wheeled with no lockers for about a decade before adding a rear Aussie Locker. I was concerned about the behavior of the autolocker because at the time my wife was daily driving the 80 and I was concerned about it causing issues specifically during winter driving. I can speak from personal experience and echo many of the comments already made about the Aussie locker. It was completely transparent and the only time during regular driving that I knew it was in the truck was when I could hear it ratchet on tight turns on pavement. No weirdness, no funky behavior, no noise. On the trail, it was excellent. I never added a front locker and frankly never felt the need to. Even with triple lockers in the current 80, I rarely use my front locker or feel the need to. I wheel on plenty of difficult trails where a front locker is commonly used by Jeeps etc that have been on the trails with us, but the 80 hasn't needed to. A rear locker alone will get you so many places. Given the description of the OP's intended use for the truck, a rear locker is definitely adequate and a front locker would be overkill and an unnecessary expense IMO. For these uses I like the idea of an auto locker because there's no need to fiddle with switches, etc and you'll get through most challenges without issue before getting stuck and then needed to lock the diff. Cheap, reliable and effective.
The front diff is a different story. Selectable every time for the front diff IMO.
A TruTrac is not a auto locker. It actually works the opposite of an open deff and that it sends the power to the wheel that has traction. It is not a locker.
