Before I had relic I hated BLM , they would steal agro from my PLD by mistake almost . Now I love them they are the best DPS class in game . Bards are 2nd because they have mana song which is super useful .

Only reason DRG would be the Limit Break I guess . Apart from that they suck from my experience.

For example in coil turn 1 the DRG would sometimes get hit when the boss ate the adds, whereas the BLM would stand back and pew pew pew .