Untill just a minute ago I always thought of FF8 as having the worst OST but I was so far off the mark.
Blue Fields, Fishermans Horizon, Julia, The Extreme, Movin' to name but a few.
Lets look at "The Extreme" when it starts to get into the swing of things it does the sorta like tune that's on (to my knowledge) 4,5,6,9s battle themes.
All great tracks, sure it has some terbile ones which is probably why I hated it so. You have to put these aside though and listen to the many good tracks it propoeses. Sure the battle theme was poor and tedious at times but there is no denying it was the best FF anyway in terms of OST, Story and depth.
All this aside I still find FF9 has the best OST there is too much of a list of greats for it not to be:
Disc1 - Crossing the Knoll
Disc3 - We are Thieves!
Disc3 - Those whom we must protect
Disc4 - Hildagarde III
Disc4 - Pandemonium
Freija's Theme
Disc4 - The evil mist, again
Disc4 - Messenger of Destruction
Disc4 - Necron - Final Battle
Disc4 - Melodies of Life
Long list
It's just a shame FF9 had the worst battle system and lacked any sort of real depth.
Of course all this is just my opinion, feel free to post your OST comments.