Who should be my first R4?

LORDSPOOKY66

Who should be my first 6 star rank 4. I’m on 8.3.2 rn so whoever’s best/most relevant out of all these guys in the picture. Archangel and Omega are both low sig I used gems on them.

Crcrcrc

Doom is probably the single most versatile and reliable champ for a lot of content that you have on your roster. He was my first r4