I just thought to check where the community is right now with the introduction of Au Ra.

Link to Strawpoll.

Wiki links since not everyone's played all Final Fantasies:
Viera | Gria | Aegyl
Bangaa | Nu Mou | Seeq
Garif | Lilty | Yuke
Ronso | Hummingway | Burmecian/Cleyran