Originally Posted by
starburst
I was deciding between paladin and priest too for a while. I eventually went for priest, mostly because a friend is going pala, but I also like their larger kit of offensive spells over paladin too (mana burn, dispel, fear, SWP for vanishing rogues, silence if you spec for it). Stoneform is also an amazing racial for priests, more so than for paladins (though its still great for palas), and is the only alliance racial which competes with horde racials, so don't bother with human if your main focus is PvP.
Another thing going for priests is they are better at healing allies who're about to die. Paladins have BoP but apart from that it's just 2.5 sec heals. Holy shock is very weak. Priests have bubble and powerful 1.5 sec heals. Small time margins mean a lot in classic PvP.
As for paladins, they certainly have better utility & buffs compared to priests... and blessing of sacrifice is OP against polymorph. They are also a lot tankier than priests. Priests get squishy around AQ & Naxx with the insane dmg melee classes start doing, so unless you have friends to play with who understand this, and can coordinate positioning and CC effectively, then your pvp career as a healing priest will be limited to MC & BWL phases.
Also I think fear ward is overrated. For PvE, bosses that fear are far and few between, and a good tank can stance dance it. In PvP warlocks simply have to recast fear & decent priests will know to dispel before fearing if there's a dwarf priest around. It's still a great spell in many situations though, but stoneform, desperate prayer and the epic beards are the main reasons I choose dwarf, not fear ward.
One last note I will make is, paladins are the best class in regards to PvP/PvE hybrid talents. Their optimal raiding spec is *very* close to their optimal PvP spec; give or take a few points in lesser talents, so no respec costs needed. Priests also have it easy compared to most classes, but not to the same degree as paladins, but they can hybridize and still be efficient in both PvP & PvE. There are other classes which don't get this privilege e.g. mages, who are significantly handicapped in one or the other (or both) if they try to hybridize.