Unholy Pacts

I've been experimenting with Unholy DPS recently on farm raids. Blood's still my first love, and I've collected an ungodly amount of Armor Penetration gear to support it, but people have convinced me I should have a back-up plan for Anub'Arak Heroic Mode, where Blood's self-healing becomes a detriment. Besides, Ebon Plague's a nice buff to have if you don't have a Warlock or Moonkin handy.

To this end, I've swapped my heroic-tanking offspec to a rather cookie-cutterish 16/0/55 Unholy 2H build.

Overall, I don't think I like it. The rotation's a rather mechanical 10-second "push something every global cooldown" deal, the only variation being when I have to refresh Bone Armor every minute. The whole rotation is basically geared towards generating Runic Power to cast Death Coils, which are one of your biggest damage sources.
The single-target DPS is comparable to Blood, and in AoE situations I kick arse, simply because my diseases do around twice the damage they normally do, and have a chance to crit thanks to T9.

That said, I don't get the 12k crits I get from Blood, and so whilst my damage is undoubtedly comparable, it just doesn't feel as fun. And I really hate Death Coil DPS builds. To me Death Coil is something you use when you're out of runes, or if the boss is out of melee range, it shouldn't be your rotation's raison d'être.

Still, if it helps us get Anub down, I'll persevere with it on some fights and hope the buffed Scourge Strike in 3.3 makes it a more fun spec.