I have them front and rear. I like the one in the rear, but hate the one in the front. The one in the rear clicks a lot when turning, and sometimes pops, but you get used to it. The one in the front makes steering a bitch when the hubs are engaged. When I get the money saved I'm going to get a ARB or something along those lines. All in all, they have been good lockers and very strong. Best thing is, the locker in the rear works so well I very rarely need to put in 4 wheel drive.