I would reccomend FF Origins for the Playstation.

After playing it on NES, PS and GBA, I found the PS version to be the absolutely best.
- The NES version has dated graphics, some real horrible sounds and is buggy.
- The PS version (FF Origins) has the same great gameplay as the NES version with updated graphics, sound and music and it has gotten rid of all those bugs.
- The GBA version (FF - Dawn of Souls) look and sound the same as the PS version, but the gameplay is totally changed for the worse. You do get some bonus dungeons, but they're not worth it. It's just WAY too easy. It can even compete with FF Mystic Quest as the easiest FF to date.

Can't tell you where to get it, though.