I've always played Unholy. Or I guess I should say I've always run with Unholy. Only having to worry about Death Coils makes things pretty easy since I'm already dealing with 2 Ret procs, MW on the shaman and GC on my tank. I try to spew out DCs anytime I proc on any of my other guys too, so it makes the DK my least micromanaged toon.

I couldn't talk numbers, since I rarely bother to run Recount, but when I have checked them, my DK consistently has the highest DPS, even without dropping DnD. AMZ is a lifesaver when combined with 4 AOE heals from the rest of my team.