After going through 4 AutoZone LCA's in less than 18 months, I can safely say that no matter which you use, you will end up replacing it in less than 5000 miles.
That's less than 2 oil changes, if you're wondering.
So for so good for the Spicer SHO specific LCA's I picked up at RockAuto.com, that would be my recommendation over the shit that AutoZone is hawking lately.