DKs or other for heroics?

I did a search looking for what heroics have been cleared by healer+4 DKs? I see a lot of posts about some heroics. I also noticed that people seem to spec the DKs to blood for harder fights. Im getting close to 85 on my Dks and am just planning ahead.

Few things I would like to know. Those of you that have a DK+healer team AND any other team that your clearing most, or all, of the heroics with. Which team do you find it easier with? I really don't want t invest my time gearing up two teams atm. I basically am wanting to pick one team to farm heroics with and ill PvP on that same team as well.

I Have the 5 mage trash farming team. My old and faithful paly tank..resto sham and 3 eles. AND soon these DKs , ill dual spec my paly to heals for the DK team once they hit 85. I have been collecting healing gear for him for awhile now.

As a 4x Dk boxer (with random healer) ive cleared all HCs exept Zanadlar and Stonecore.
Most bosses is ez once you have tweaked your setup a bit :)