Which version of Mags should I use?

Lmaster

I am an uncollected player. I have a maxed out 4* awakened red mags and a 5* unawakened red mags at r3. When I r4 my Red mags (he's my next r4) I will use him but for know idk which one to use.

Lion101

R3 unawakened 5*

Just use both

KennMcoc

R3 unawakened 5*

When times come u won’t use 4* champs anymore