Back before I got seet up to relaod .45 ACP I shot a lot of Blazer Brass. (and have relaoded the same prass several times now) Never had a problem. I shot a boat load of Blazer Aluminum during the academy, also with issue. With that said, I'd buy which ever is cheaper.

 

Have good luck with both.

 

Both work the same and seem to have have the same brass life.
PMC seems to put out more ammo with small primers nowadays. That matters to some.