I. Compilation of Final Fantasy VII
II. Fabula Nova Crystallis: Final Fantasy XIII Saga
Main reason: Focus on characters, great atmosphere and world, Lightning, story is epic though full of plotholes. Most interesting cast in all. Even Final Fantasy VII has half of a cast not as interesting for me as Sephiroth, Cloud and Aerith, Zack and Vincent.
III. Final Fantasy IX
IV. Final Fantasy VI
V. Final Fantasy X Saga