Who to R2 7*

Like in title need some tips;)

Guardian i have got 6* r4 sig200
Knull 6* r4 sig200

Comments

Up to you on who you use more. I personally like brb and gladiator.

Crossbones is amazing.

Guardian, my first r3 and I was actually disappointed to get a tech gem but he is fire

I'd say Gladiator because he's fun. So is Crossbones. But depends on if your rank up is for BGs or general questing.