I think air lines, seal housings, compressors, and solenoids add potential failures into ARB locker installations. I'm guessing this is why many stay away from them. With that said, I run a rear ARB on my Jeep because they are really solid when they work. I carry spare parts (solenoids, shut off switch, relays, air line unions) in case of failure on the compressor or line. I've yet to have a failure except for a pinched line.