My best characters were Auron and Lulu. I always kept Tidus on the team because he fairs well during battle. Yuna and Kimarhi were the worst characters for battle. Sure aeons are nice to look at, but who needs them when you have pure muscle and full fledged black magic! I never trained yuna or got holy magic and blah, and you really don't need it either. Great game, poor ultimate bosses and the ending almost made me cry - it was so bad. But still a great great game. Don't know if it's just me or not - but Auron is just damn sexy with his personality and sword. I mean c'mon, for a dead guy that's amazing!