Final Fantasy X wasn't always my favorite. Many years ago I'd have easily given that title to VII.

I used to think X-2 was not remotely worthy of being compared alongside the PSX era FFs. That view was quickly abandoned when I got my hands on the International version.

My opinion on XII went from 'hard to accept as FF' (first look) to 'an okay game' (after first playthrough) to 'a pretty good game' (after replay) to 'damn this game is amazing' (after playing IZJS).

I used to pick Blitzball over Triple Triad as my favorite FF minigame.