Each subgroup is ordered from best to worst

The Cream: Duodecim, Crisis Core*, XIII-2

Not For Everybody (but I liked them): VIII, IX, XIII, Dissidia

I thought they were OK: X, X-2

The Unplayed: Everything not otherwise on this list

BAD BAD BAD: VII, Lightning Returns

* Questionable design choices, but a fantastic script.

Well, it's a great thing Final Fantasy II remained unknown!

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)

Ito : 6 - 9 - 12 Shit design (6 is still the best though)

Kitase : 6 - 7 - 8 - 10 Classic/feel

Sakaguchi : 1- 2 - 3 - 4- 5 Old

Toriyama : 13 series

Please don't! You're doing yourself a favor by not playing those games!

C'mon. Final Fantasy XIII may not live up to Final Fantasy standards, but it is a great JRPG nonetheless!

That's your opinion, not mine!

WELL I'M FORCING MY OPINION ONTO YOURS HERE.

Exactly, Its personally one of my best FF games. I feel its only drawback (and in truth its a big one) was the underdeveloped story arch of the main character. But I loved everything else about the game.

I classify them according the platform so NES, SNES, PS, PS2, PS3 with the exception of FFXI and FFXIV who don't exist in my perspective.