ARB's Air Lockers are physically stronger than Eaton's eLocker, but you are correct in that the ARB Air Lockers are more complex and require an on-board compressor, air lines, and manifold for install. The Eaton solely requires wiring to your battery and a standard rocker single-function switch of some sort. Both require drilling into your truck's differential housing. In the end, unless you either already have a suitable on-board compressor or you're really going to be beating the heck out of your truck, the Eaton is probably the better bang-for-your-buck.