How do you organize Final Fantasy?

[The Fury]

1) Main series: I-X, XII, XIII
2) Everything else.

Based on the games:
1) The Great: IV-X,XII
2) The I haven't played: I-III
3) The MMOs I'll never play: XI, XIV
4) The ones you don't play around people: X-2
5) The ones that are a disgrace to the series: XIII (and it's sequels)