It depends on what you're fighting? Up against something tough and want to pull out your DPS and show everyone how big it is? Best DPS'er there is Paladin, no question. Don't believe me? Then a test! Go up to Chimera (as an example) and see how long you last without the Paladin. Of course, if you're a Paladin the best DPS for you comes from a WHM or SCH, without them you won't be able to put out the amazing skills to prevent the other-dps-who-are-not-as-good-as-paladin-because-would-die-before-being-able-to-actually-output-DPS from dying.

Either that or Goldsmith.