What Diff oil to use?

Well folks, I'll be replacing my diff housing this weekend, and I'm wondering what you reckon would be the best brand to use in a 1.8 LSD mk2 diff?
75w90, obviously, so I'm interested in what brand you would prefer. I've heard good stuff about Mobil.
75w90, obviously, so I'm interested in what brand you would prefer. I've heard good stuff about Mobil.