Should I get Emilie's Sig or Xilonen?

For context I currently have c0 emilie, the dps I use are Lyney, Arlec, c1 Kaeya (I had a kaeya main phase lol)

Idk which one would be more beneficial, Emilie's sig or C0 Xilonen? My account only have one decently built support which is Bennet.