All of them. If for no other reason than utility, take at least 1 of every type of healer. Take a druid, take a paladin, take a priest, take a shaman. To keep the MT up most efficiently, you need paladins. To cover the MT during silence, you need HoTs, Earth Shield, reactive heals, damn near anything you can stack on the man. To effectively heal up the DPS you need HoTs, AoE heals, Chain heal.

This isn't really unique to Gruul, either, mind you. Having a diversity of healers is superior to stacking up one particular type of healer. The only "healer-stacking" you should do is to take several Paladins, because most boss fights include the MT getting wailed on. Paladins are superior single target healers.

WWS will break this down and show you parries, etc (as well as letting you see when those parries occurred and look at logs before the MT death)

Getting the most out of WoW Web Stats

A couple of tips we picked in learning gruul previously that may assist you that i did not see posted yet: If you have 3 or more warlocks having cor in the early part of the fight improves the dps while gruul has not grown much while later in the fight the same warlock can switch to cow or if you have four warlocks having both up is a nice combo on him.

Also, and i really think this might assist you since you had *6* paladins. Paladins are able to bubble out of the silence to heal on the mt. After grow 12/13 you could hypothetically have one bubble almost every silence and continue healing on the mt until gruul is down given 4+ paladins. Your dps for the first few tries sounds quite in line with what our guild did fresh out of kara on gruul as well so i would continue the method you are using there and it should improve after a few more goes under your belt.

We killed gruul like a month ago and this was quite helpful. 5 paladins this week,too.=/

Considering the power of Shaman totems, even when resto-specced, is why i think they should be stacked more than Priests and Druids. They have a fantastic group heal and buff the group immensly. Priests and Druids don't bring much to their group, and their raid-wide buffs only require 1 person from the class to be there.

Healing: 7-8healers is more than enough, shadowpriests help a hell of a lot (our best shadow priest is also 3-4th in damage)

You CAN Amp magic the whole raid if you wish


Tank: You could try a Feral Druid Main tanking (letting your melee go all out much quicker) anything over 18khp and 27k armour raid buffed is more than fine.
- Offtank, will be starved for rage until the 2nd or third growth so have them stand in a cavein ^^ so they can spam rage abilities until the hurtfulls are generating enough rage for them to stay above melee.

DPS: Should require little or no healing.

Rogues can do this fight take only 4-5kdamage and require 0 healing. (presuming they use CloS on every Ground slam (removes the slowing & frozen effect))
Imp sprint if CloS is on CD.

Warriors may need a little healing but if they avoid cavein's they shouldent need much.

Mages,Warlocks,Hunters etc (ranged)
Should be prepared to stop cast's and move when they get Cavein's, bandage after Shatters, and if you have a SPriest. after 4/5growths they can pop VE and keep their groups topped. only reccomend this if your using a feral main tank, as a warrior's threat generation is pretty low in comparrison


My preference for a Feral tank is mainly due to the fact that as a Rogue i seem to catch up to our warrior tanks pretty damn fast (even with chain misdirection) dieing with a 100k+ lead at 30% and still being top damage is nice tho.