Yeah I like 8 the most, because the story interested me and it was more serious and I suppose "mature" than the other ones. But I am comfortable knowing the games I like are dry and boring. It was the first FF to actually look nice, which was a plus at the time it came out, tho looking nice hasn't been such a great strategy for them ever since.
Playstation2 RUINED the FF series plain and simple. I'm glad their games are on the xbox now, as it will either fix the monarchy PS had or just turn the series into a FPS.
FF10 irks me the most, as they spent all their effort on it looking nice. They used the NES dungeon strategy for the whole game for christ sakes.
7 was great because it was so creative and abstract, 9 was good cause it was pure fantasy and no bullshit, 12 was 'european' and had only monster cameos to tie it to the FF series.