I- Fighter, Thief, Black Mage, White Mage
IV- well that's obvious
VII- Cloud, Tifa, Cid
VII- Squall, Zell and Selphie-Selphie was my mage, and Squall and Zell limit breaks
IX- Zidane, Vivi, Garnet and Steiner or Amarant, depending on my mood
X- I did a lot of switching, I wanted all my characters to be powerful, but starting off a battle it usually was Auron, Lulu and Tidus
XII- Same story with X, I switched everyone around to have the same level, but my favorite party was Basch, Ashe and Penelo (Penelo being my curer, Ashe for black magic and Basch to smash