User blog comment:Raye2309/Help with Units!/@comment-25251916-20150103095224/@comment-25816013-20150103224557

Duel-SGX and Faris overlap in terms of the crit buff. Although Duel-SGX offers a higher crit buff, the team slot should be used for another helpful unit something along the lines of:

Faris (leader)

Arius

Exvehl

Ardin

Luther

This team carries a lot of helpful buffs and debuffs: crit, spark, atk down, anti-status as well as Arius' heal. For those reasons, questing should be super easy. I do NOT recommend Zelha because Luther outclasses her hard in my opinion (spark > statuses).

Also the second team is not the most optimal for BB spamming because Bordebegia takes a ton of BCs to fill up and his spark, crit buff and LS (70% + 30% + 1.5x fill rate) can be covered by using Luther (a generally better Sparker) and Faris (50% + 45% + 1.5x fill rate + Faris' HC drop rate increase).

The third team looks fantastic. With the right RNG and spheres, you could take down Maxwell with it.

tl;dr First team is solid but can be improved. Second team is terrible but still usable. Third team is super solid.