Dragoon is tough to pass up in the 1 slot seeing as how Kain is my favorite character. Summoner's are almost always the strongest magic users and have Leviatian and bahamut most every game which rocks. Thief's are awesome b/c of their very high speed stats, and lets you become better than you should be by stealing weapons or armor you normally couldnt get yet.(especially IX)
1.Dragoon 2.Thief 3.Time mage 4.Summoner 5.Ninja