Also give a reason for why it is.

Out of the ones i have played which are I,II,V,VI,VII,VIII,IX,X, I would have to say the one i disliked the most would have to be II. I mean the story was boring, the whole stat system was very weak, and all round the whole atmosphere was sort of dull. But hey, it's Final Fantasy and i have to have it in my collection. So what about you guys?