VIII had the best soundtrack by far!
With it's lovely jazz influenced city themes, and piano (keyboard, synth) tracks. All the cities manage to sit between an army march and a dark-roomed jazz piece. It fit in really well with the games novel style, it's big cold cities, with warm bars and singers. Despite the fact that I couldn't care less about the actual game, I love this soundtrack
And by the way, Fisherman's Horizon is the best Final Fantasy song.
I don't think there has been a Final Fantasy soundtrack I did not enjoy. I do find myself listenning to IX
the most though, You're not Alone and Melodies of Life being a couple of my personal favorites. I
enjoyed VII's a lot as well, but I believe it's more for nostalgic reasons than anything else. Criris Core
had quite a few wonderful tracks too, Why and The Price of Freedom still tug on my heart strings
whenever I hear 'em. (I would love to hear Why sung in english one of these days.)