Auburn is a good one too, that is the one with the cone style clutches IIRC. Eaton has a disc style and can be rebuilt. I had an Auburn at one point though, was a great unit. However an OEM diff with the extra clutch mod is a very solid diff and will last a long time unless you are running a good amount of power and are on slicks.
2000 Mustang GT Steeda build #48. Bolt ons, suspension, Novi 2000.
Just because I give you advice, doesn't mean I know more than you. Its just means I've done more stupid ****.