I run a d44 OX in the rear and a D44 e-locker in the front. They all have good, bad and ugly about them. I had a few issues with the e-locker install, but that may have been due to the HP housing. in regards to operation, I KNOW when the OX is locked and unlocked. The E-locker lock very quickly and quietly, but takes a little to unlock for me. Not very often a big deal, but something I noticed. It's easy to mount the switch, or make your own, as it's just a 12v relay. I have not managed to break anything in either, however, I do trust the OX more then the Eaton. 4 pinion design (e-locker in a 44 is not), a big, heavy diff cover, and the ability to lock or unlock the unit if I rip a cable out are all pluses for the OX.
If I had to do it again? 2 Eatons would go in. "Why? you just said you liked the OX better?". That's true, it's because of the company, not so much the product. Eaton has been around for a VERY long time, builds for the OEM groups and still makes/sells parts for older units, even if the parts belong to a company they bought out. you can still get Detroit locker parts made decades ago. OX has changed it's design a few times, the company itself has pulled products and support without warning on others (OX joints and support were MIA for a few years), and been bought and sold at least 3 times in the last 15 years. IF I do break the OX, I don't know if I'll be ably to get parts for it, but I know Eaton will be there.
Oh ya, IMO!