Me as a angelic buster player can give you some information and tips.
Angelic busters are a really strong class. They dont really have many lines but they have very high damage.
They have the unique recharge system.
That means you use a skill and gain recharge , recharge is needed for certain skill but sometimes the recharge fails and you need to use another skill to recharge.
That means you can't spam a single skill BUUUUUUUUUUUT you gain passives with each job up that increase your recharge chance. At the 4th job you get a passive that lets you have NO RECHARGE FAILS, but only when the skill is lvl 30.
They are also very mobile.
The only really dumb things are the lack of lines and low defense, you can turn if the voice acting of her.
Kinesis are also strong. They are really mobile mages and have pretty high defense because of a toggle skill and have naturally high hp.
Their special thing is the PP bar .
They dont use ANY mana and only very strong skills use it.
Overall kinesis is fun. THROW DA MOBS