Hey Joe,
I ran a pretty extensive test on magazines about two years ago comparing Wilson, Baer, Tripp, Kimber, Springfield stock, Colt, Novak and Wolff magazines in a couple of recalitrant 1911's that I had at that time. Yes, the feeding issues in both 1911's were magazine related, but the only magazine that was 100% in those two 1911's were the Tripp magazines (7 round, welded floor plate version). It was a long test (for me) and ate up a lot of ammo, but since then I've upgraded to 100% Tripp mags. A very close second were the Wilsons. Anyway, I probably didn't prove much, but the Tripps have worked perfectly in my other 1911's, too. However, my everyday carry PII seems to work with just about any magazine, including Baer mags. My bottom line feeling, though, is that in many cases, poor feeding can be traced back to the pistol itself....a good mag will sometimes get it to function in spite of itself. I'd always have a smith look at a problem feeder for any other potential issue before trusting it for the most important mission of keeping you and yours safe. Best of luck.