*moves to Gen FF*

Lulu is the best character in Final Fantasy X. She's obviously the smartest of the group and her personality, while not terribly well explored due to the focus on Tidus and Yuna, is very appealing. She's calm and competent, and she understands far more than most of the other characters. Furthermore, you see an interesting change as her world is turned upside-down with the revelation of the Final Summoning's purpose.

Tifa is equally a good character, she shows a great deal of devotion to Cloud even though it is not reciprocated, and she also has a definite selfless quality to her that I found to be quite a good aspect of her personality. The way she changes and evolves throughout the story is quite believeable, and I like her very much as a character, as opposed to Aeris, who I found to be somewhat irritating and self-centered.

Yuna I'm fairly neutral on. I don't mind her, she was considerably more irritating in X-2, but she's not terrible, all things considered. I do think that X-2 isn't the best on "believable character evolutions," so I'm willing to forgive her for her X-2 incarnation to some degree.