I see quite a few of us 5 boxers are using a pally tank going through instances. Just want to share something. While pally tank is great for holding multi trash mobs, I do have problem with generating burst dmg for threat as well as sustaining a certain amount of threat when my mages are nuking crazy. Particularly, have problem with two ogre bosses (second bosses in Shattered Hall & Shadow Lab). After the aggro reset, I either don't have enough mana to grab them back, or even if i do, they would just ignore my attack.

So after digging around, I found the problem - my spell dmg is toooo low! Most of the threat for pallies are coming from holy dmg rather than white dmg. All my gears are warrior tanking plate with plus defense, stam, and avoidance. On top of that, I have been using a melee tanking weapon all this time (and trying to grind for Sun Eater ). Solutions? I should be using a caster sword with +spell dmg for tanking since that gives the most spell dmg per piece. Only wish I could find this out earlier. The summery I find for paladin tank on Wowinsider


* Get 10-12k hp at level 70
* Get 490 Defense
* Get 250 Spell Damage
* Get your total of dodge/parry/block to 100% (with holy shield/redoubt)
* Put up Retribution Aura
* Cast Greater Blessing of Sanctuary on yourself
* Pull with Avenger's Shield
* Judge Seal of the Crusader, then keep up Seal of Righteousness
* Judge Righteousness every 8 seconds
* Consecrate
* Holy Shield
* Win big loots, have your party love you
http://www.wowinsider.com/paladin-tanking