I had a love/hate relationship with quina. There were times in the plot that I adored that chubby freak, and times that I could havew strangled her/him/it (i usually call quina 'her' - as someone said - that much pink cant be ignored)

as for battles i made a half-decent attempt to get as much blue magic as i could without going nuts, and i found her useful at times, though mostly i prefered the vivi/steiner combination until later on in the game.

anywho each to their own i guess :P