Alright Hazz, check this out. IMO, PS started the new gen of FF, and with the other two, which you've played, I feel VII was a better overall GAME (battle mechanics, gameplay, minigames, just overall GAME) whereas VIII had the edge in story (slightly) and overall cinematic feel.

I feel that FFIX combines the best of both worlds, it's probably the best "all-around" game in the series. But I feel that in doing everything really good, the battles weren't as fun as in VII and the story wasn't as original or great as VIII. It's still a great game though and considering you've played the other games I definately recommend it. You'll like it.