DRK is hella fun once you figure the sweet spot of your HP that lets you stay alive while dishing tons of damage with some nice defenses to hold you.

For supportive jobs PLD, AST, SGE and BRD have some fun ways to support your team, be it defensively, with buffs / debuffs or with crowd control.

If you like more damage focused jobs, DRG and MNK are solid melee jobs while MCH and RDM are fun ranged / caster picks.

Hard to say what you may like, you should try a few.