Which one is objectively better for a Flins team: Ineffa's Sig or Columbina's sig?

I already have Ineffa (on the r5 nod krai craftable) and Flins (tamayuratei no ohanashi) and I'm planning to get Columbina for this team. Is it better to get Ineffa's weapon or Columbina's weapon (I don't have lauma, nefer, and won't be getting zibai either)? I am planning to put Ineffa on the new dmg set and columbina on serenade; since Ineffa would be dealing most of the team's damage I was wondering if it is a better idea to get her sig instead of Columbina's.