Final Fantasy 7. FF9 doesn't come close for me, neither does 8 but never played it, but I would prefer from 9 from what I HAVE seen in Let's Plays
But FF7 is the best. What pisses me off about it is all the fuckheads who keep saying that all the people who like it are "emo faggot suck cock-tards" (or simalar variations) who obsess over anime and cos-play.
First of all, I'm not emo. I'm happy in life, and I like FF7, I am not into anime or COSPLAY AT ALL. In fact I much prefer western animation.
So people like that need to shut the FUCK up.
Anyhoo, Final Fantasy 7 really made RPGs popular in the west, and It was the first Final Fantasy ever in Europe.
It had a great story, great characters, the best soundtrack in a videogame ever. (LOOKING AT YOU FF6), and overall it was an amazing experience for me.
As for 9, I'm not a big fan. Sure the graphics are pretty for PS1 but that's all it's got. The music is pretty OK too, but I just prefer FF7 a whole lot more, probably because I prefer Sci-Fi over medieval stuff.