Paladin + 4x Shaman = Faceroll across keyboard. Seriously, if you're not clearing everything out there, you're doing something wrong.

I prefer Paladin + 3x Shaman + Boomkin/Warlock for the 13% dmg buff. Mages provide free water and transportation, which is nice. (Arcane is a simple castsequence too, no crazy macros needed)

That said, after years of playing a Paladin tank, I'm getting rather bored of him. Combat is extremely static. (hence the faceroll comment).