Should I pull for Sunna or Save for Nangong?

Basically title. I don't think I have enough on me to pull for more than 1 angel, so I kinda just wanted to complement my existent teams. Currently My Miyabi team consists of Yuzuha and Yanagi, but I saw that Nangong is expected to be very good for anomaly, but most of the teams also have Sunna.

SHould I just save for Nangong or does Sunna bring enough Value alone that i should risk both? (I know Sunna pairs great with Ye Shunguang, but Zhao and Diyalin have been serving me great)