There are quite a few people here who know more about 1911 mags than I...of the listed brands, I would lean towards Mec-Gar, which is the only 'generic' magazine company worth buying (they actually make the OEM mags for SIG-Sauer and other companies, and those work great).
I have a Caspian frame 9MM that I built and it uses any standard, 1911 9MM mags.
You can get them from Midway and I believe Wilson has them. I will check in the morning to see if I have some at the range. If so I will let you know right away.
9MM and 38 super are the same mags for the 1911 pistols BTW.