The closest I have come to 100% reliable mags are Checkmates. They make Colt's "OEM" mags. The limited number of MecGars I have used have been good. Wilsons, mostly good. I do have one 1911 that hates Wilson.
I would start with Checkmates as they are reasonably priced and go from there.
Jim's Rules of Carry: 1. Any gun is better than no gun. 2. A gun that is reliable is better than a gun that is not. 3. A hole in the right place is better than a hole in the wrong place. 4. A bigger hole is a better hole.