well i hated Vagrant story so i dont know, while the rest r not avaliable here in the UK, which is a real pity.

ermm i,m a HUGE fan of Emerald weapon from ffVII.

other favs are Ruby(ffVII), Ultima(ffVIII)(and he has just been crowned the greatest ever weapon in the weapon cup), Dark Bahamat(ffX) and Penance(ffX).