The E-locker is the electromagnet actuated one correct? If so, i've only heard positive things about it. I have Detroits Electrak locker, and its a god damn POS. It hasnt locked right since the first weekend of having it. I adjusted it to spec a half a dozen times, tried 3 different types of oil in the diff, and still nothing. Detroit was no help and wouldnt stand behind their junk. The only positive to it, is this unit is a Truetrac "posi" when unlocked, so its still somewhat capable, untill i really need the front locked solid to help the 40's paw up some rocks. Never an issue out of the tried and true Detroit locker out back, always there when you want it, and even more so when ya dont haha.