well, from what ive heard, ffvii for pc has alot of errors, especially for people that use windows xp. i also know that it uses midi files instead of the music on the ps, so OWA wont have voices
on the plus side, you can use jenova to hack into the program (like my gf likes to do...) and get everyone maxes out and all. (not to mention put a certain flower girl back into your party
)
id get the ps version. but if you like cheating, you can get the pc version