I use -Tidus
-Wakka (just for sentimental reasons) but auroch's shot is good, and he can learn all abilities, excluding, of course, the Jecht shots.
-yes, Brother can't beat his speed. Since he gets involved in more actions/encounters he always levels up really fast.
-Ropp is strong
-Naida (recruit her at the calm lands shop) she's decent and has some speed (I hate slow players)
-Miyu is a great early goalie, and later goalie as a matter of fact. I like to get Nimrook, but since the Albheds usually keep renewing his contract into oblivion that can take quite a while.