FF8 was good on it's own, but when compared to others it just falls by the wayside.
4, 6, 7, 8, 9, 10 and 10-2 (storyline was meh, but the battle system was awesome albeit a bit girly), 11 (yeah it had a story, but was a LONG and difficult journey), 13 were all good in their own right but 4, 6, 7, 9 and 11 are my favorites. I never played 1, 2, 3 or 5 sadly... never got my hands on any English translations.