Hi there.
I'm necroing this thread to post an observation and a question:

+ Spirit bond stat: Does that even work at all?
Binding ilvl 45 NQ (no materia) nets me 1% per lv 49 mobkill, no matter whether I have +5 Bond (2x Aether rings + potion) or +0.
Binding ilvl 55 NQ (1 Materia) nets me 1% every 2 mobs, no matter whether I have +5 Bond (2x Aether rings + potion) or +0.