if you are referring to the factory e-locker, the benefits of it is that it's integrated into your jeep (or can be) and has a clean look. it also does not require a compressor to make it work and doesn't have air lines that can rupture or melt. having said that, the factory e-locker is weak, prone to having engagment/disengagement issues and even break. air lockers like the kind ARB makes is solid and has proven to work well. the later is what we use.
EDIT: i see that you specifically point out eaton. unfortuantely, i have no experience with one and can't give you an accurate assesment on one of them.
The Dana applications seem to use more of an electric version of how an ARB works. The 8.8 and 10 Bolt were a ball ramp that drove pins into the back side of the side gear. being a ball ramp, they engage/disengage each time you change forward and reverse. Regardless though, the Eatons all seem to have the lock/unlock/lock PITA when you back up, and again when you go forward. This is how mine went on me. The pins chip off in the slots as a natural function of operation. Thus how it wears out quick. How the Dana editions wear internally... can't say. Was not going to try again.
ARB all the way![]()
I was leaning towards lockers at the same time