FF8, on a demo disc. It consisted of just the Dollet mission, with a bunch of endgame magics and GF available. I had Aura to fight Evolret. Was awesome.
I played FFX first. I was all of twelve, and it was the first FF to be released on PS2, so naturally I was completely wowed by it and all it's gorgeous graphics (which are now completely average by these day's standards xD).