I second (and Third?) Wilson Combat Magazines.
My S&W 1911PD came with two factory mags, I think they are Check-Mates.
One gave me constant failures( Factory replaced in kind, works OK now) the other intermintant failures. Every single feeding related failure with my 1911PD (about 4 or 8 out of 1000 rounds fired) had been with those two magazines.
I also have 5 different Wilson Combat 8 roung magazines, I have not had a SINGLE feeding related failure while using the WC mags. I have only had one stove pipe while using the WC Magazines and that was before the factory replaced the ejector.
Buy a couple of Wilson Combat magazines and see how they hold up. If all is good then buy some more.