Which 7* hero should I rank 4?

doctorb

Right now, my only 7* r4 are Apocalypse and Juggs.
Which of the following 7* should I bring to rank 4?
The 'u' is unduped and the 'd' is duped.


Shuri - d

Jean Grey - d

Photon - d

Void - d

Bastion - d

Phoenix - u

Serpent - u

Yelena Belova - u

Mister Sinister - u

DPX - u

NTW - u

doctorb