I would go Bard, because they will make your casters better, tank better, melee better, pets better, enemies worse, you more handsome/beautiful IRL, consolidate your debt at a lower interest rate, and even do household chores.
Seriously though, Bard is fantastic.
It's good CC
Keeping Fierce Eye up makes your nukes, heals, and melee crit more often and for more
You get Aria songs that increase spell damage, melee haste v3, chance to triple attack, chance to flurry, and increase pet chance to flurry
Your aura provides improvements to accuracy, crit chance, triple attack, double attack, spell damage, etc
Double invis
Awesome puller with Fading Memories (also just aggro management in general)