Looking to start a healer +4 for PvP (mostly BG's). Is there a particular melee setup that's stronger than the others? I've never boxed melee before. I've read most of the threads and guides in the first few pages here, but I can't see any direct comparisons.

Can't decide between DK's, Shamans or Paladins. Am I right in assuming DK's have better damage and control with grip and chains, Paladins have better survivability/healing? Not sure where Enhance Shamans would fit in. Tips please!