DK AOE tank spec for heroics

[Briangriffin]

Hey there.

First time poster, long time reader.

I've been away from WoW for about 6 months and a lot have been going on in the DK tanking area since I left, so I need some help with my spec. I aim to tank heroics in order to get some emblems and gear up for Ulduar 10/25. I was thinking I would like a AOE-spec, as (as far as I remember) that's more important in heroics than singletarget-threat in heroics. It seems (to me) that frost is the way to go for AOE, because unholy got nerfed. Or am I completely wrong? :)

Talent Calculator - World of Warcraft (http://www.wowhead.com/?talent#j0EZhgx0AbIoc0buzAo0gh)

The World of Warcraft Armory (http://eu.wowarmory.com/character-sheet.xml?r=Ravencrest&n=Briangriffin)

Hope you'll give me some pointers, since I'm kinda at a loss here. Have a nice day.

[Madoxx]

After the latest patch 3.2 Id roll with unholy as AOE is king in this spec , but i have never found any problems with blood AOE threat at all and that is what i tend to use all the time at the moment in heroics and raids , but if you starting out again give Unholy a go might prove a bit easier .
Frost is a good AOE spec too but id still class unholy king of the AOE