There’s one piece that I can’t find consistent answers on.

What exactly is Black Adam’s opinion about Billy? I’ve found a lot off answers. Does he personally hate him (Return of Black Adam movie)? Does he resent that he was replaced, but hold no personal beef with Billy (looks like the golden age)? Is there some attempt to bring him to his side (his treatment of Mary in Countdown seems to suggest that)? Does he want Billy’s power and is willing to kill him for it, but doesn’t personally hate him (New 52)?

What do you think is the best position?

I know Billy’s is less varied. It’s either a typical hero-villain set up, or he kind of has respect/pity (New 52).