I kinda latched on to Gladius for Lightning early in the game. High strength stat and she was my best fighter until Fang showed up. Fang, I just stuck with her default lance. Due to the difficulty of the upgrade system, I never used any of the others I found as things progressed. So what I'm curious about now is, are any other weapons worth using once I eventually upgrade them for the Treasure Hunter Achievement. The Belladonna/Marboro Wand is the obvious choice for Vanille, but I'm unsure for everyone else. Does anyone else have any weapons that stand out for them?