Amerc....is USELESS, and i mean it. I tried to make dummy rounds with it, and it would not fit in a case gauge. It serves only as a bad example.
Speer is, IME, decent brass except for the funky concave case head.
Selier and Bellot brass is good, IME, as i bought a case or two of 45ACP, shot it up and now reload it, seems fine to me.