1. FFVII
2. FFXII
3. FFVIII
4. FFXIV
5. FFIX
6. FFVI
7. FFXI
8. FFXIII
9. FFV
10. FFIV
11. FFX

Never played I, II, and III.

I've played FFIX through to disc three before I got sick of it. Every character design is an eyesore, every line was nail on a chalkboard, and the plot was just... Forgettable. I keep trying to remember what I was working against in the game, but it's just a mess of ugly character designs and generic Fantasy settings. And if I wanted generic Fantasy, I was going to do it with a job system, not a preteen with a tail. 

Beat it once, played through to Galuf dying on numerous occasions. The only titles I feel spending more time in could change their ordering are VI, IV, and III. Otherwise I've logged roughly 20 hours in each game, some more than others (Tactics/WotL has the largest playtime, but it's still a spinoff).

There are a few things I consider in Final Fantasy games:

1. Job System. I love the job system. It was neat in 3, fleshed out in 5, and perfected in Tactics. 

2. Character design. JRPGs are stylistic ventures, so i don't want my protagonist looking like an idiot. As far as my personal taste is concerned, the best way to look like an idiot is to dress like any character in IX... Except Blank (he's the only reason I made it so far into IX... I wanted him back on my team, I was just unaware that he didn't return to the party).

3. If no job system is present, characters should be fairly open in what they can do. It's one reason I like the Materia system so much. Plug in a ball, you know magic. Your stats are adjusted to reflect that. It's great. The Sphere Grid was great, too. The Draw System... Well, I didn't hate it. I definitely liked other things more, though. 

4. The story. It has to reach me and connect with me. The best way to do that is by tying a major gameplay mechanic to an aspect of the story (ie, Materia), but i will always prefer a Job system to this. I'd like to reiterate that the most playtime in a Final Fantasy I've had is Tactics, and I'm still not sure what's going on. I'm in it for the job system. 

Some strong opinion there.  

I don't see the 'eyesore' you are talking about though. You might not enjoy the character design or art or entire design of the game but an eyesore? 

It's been awhile but I enjoyed it quite a lot. Not because of Vivi or Kuja but the game as a whole was an enjoyable Final Fantasy ride.

To each his own though, I wouldn't dare telling someone who played so many FF's that he has bad taste... ;p

1. FFIX

2. FFVI

3. FFVIII

4. FFIV

5. FFXV

6. FFXIII

7. FFV
Other entries haven't played or finished.

  1. Final Fantasy 10

  2. Final Fantasy 12

  3. Final Fantasy 7

  4. Final Fantasy 3

  5. Final Fantasy 6

  6. Final Fantasy 5

  7. Final Fantasy 1

  8. Final Fantasy 8

  9. Final Fantasy 9

10. Final Fantasy 13

11. Final Fantasy 2

12. Final Fantasy 4

13. Final Fantasy 14

14. Final Fantasy 11

I haven't played I, II and V. My ranking would be:

1. Final Fantasy VIII
2. Final Fantasy IV
3. Final Fantasy VI
4. Final Fantasy IX
5. Final Fantasy X
6. Final Fantasy XII
7. Final Fantasy III
8. Final Fantasy XIII
9. Final Fantasy VII

I will list only mainline and offline (that i played):

1.VIII
2.VI
3.XII
4.IV
5.IX
6.VII
7.V
8.X
9.XIII

I'm actually glad so many put FF VIII in very high spots!

I love FFVIII it's a great game imo.