[FFIX Choco Boy]

I've never gotten a fail party, and I've done all the 4 of one type parties, and all the solo parties. I'll rank em in diffuculty, easy to hard.

4 of one type:
Black Mage
Black Belt
Red Mage
Fighter
Thief
White Mage

These were acttually all very easy.

Solo Parties:
Fighter
Black Belt
Red Mage
Black Mage
Thief
White Mage

These were all close to impossible until class change with the warrior, then I breezed the game. The White Mage took me over 6 hours to kill Chaos.