My favorite party would have to be Eiko, Freya, Vivi, and Steiner

Eiko: I choose her because she is a much more powerfuler white mage than dagger will ever be. Plus she has 4 great summons to back her up like for protection carbunkel, pheinox for reviving and fire damage, Ferin for earth or wind damage...Ya:shoot:, and need I say anything about medium!!!!!

Freya:Her dragon crest and breath moves rawk. She can jump up into the air and in trance stay up there, not able to be hurt, and rains lances!!!!!!!!!!!!!!!!..oh and reis wind.

Vivi:my all around mage for tones of fun to bbq or just slauter your enemys.And Doomsday with shadow armor is a healer with a magorly strong attack.

Sternier:All the sword skills are so strong and cool plus he can use magic swords. Like if Vivi and none of the others had any shadow armor all u need is vivi to give sternier doomsday sword and BOOM!!!! tons of damage to 1 enemy