If you are wanting extra XP, do the vet version of the Dungeons actually give more experience or is it the same as normal and the gear is the main benefit for running them?
Random dungeon daily is the same xp earned, other than that you should not be running dungeons to level, even if mobs do give better xp on vet (which I am not sure they do) its still terrible way to level compared to grinding/questing.