the esper because i dont really need the sword or the illumina.
Locke uses atma weapon
mog uses pearl lance i belive
shadow uses gladius i belive
gogo uses scimitar or sky render i belive

whatever it is everyone ends up hitting at 9999 anyways. i get the esper so i can get ultima even quicker then going through the annoyance or changeing the cursed shield into the paladin shield.