Aka the last PS1 FF, before PS2 came with FFX(-2), FF12, and an online FF game (XI).
Whereas FFVII is most hyped, and FFVIII is bashed quite a lot, FFIX is utterly...ignored. Many thought it was due to the fact that it didn't seem as "serious" as other FFs, that it was "too old-school", and if FF8 was too hard (junctions n crap), FF9 was too easy (learning abilities from items. Once fully mastered, you can use them without having to have the item you learned said ability from equipped). But I believe FFIX has a lot of potential. If you don't want dark and gloomy like 8 or hardcore like 7, 9 is for you.