I recently spent a minor fortune and purchased sample lots of various magazines- Chip McCormick, Wilson, Metalform, and Wolff, and compared them to some "tuned" magazines I had for specific guns.
Overall I think they were all nice (see I am trying not to diss anyone),but in the end I will stick with the Metlaforms I acquired, and trade off the others at shows.
The Wolffs are also outstanding, but I got a good deal on a lot order of ten of the metalforms, mix and match, and ordered some wolff springs to install in them, so I am 99% of the way there anyway! (although I will hang on to those Wolff mags also)
Some brands like the shooting star are at every gun shop I go to, and Wilsons are very high profile in publications and folks like Dillion sells them, but for me the metalforms functioned flawlessly in all of my 45s. The out of pocket expense of purchasing the various mags was a drag, but I am really happy now that I did it, and got to actually test the compatibility of the magazines to the guns...
To me the Wolff is nice, but it cost more than the Metalform that is just about the same mag. I went one direction, getting Metalforms and adding Wolff springs, while one could go another tack and just get Wolff mags with metalform bodies and thier springs. If I was purchasing to make a "selling package" I would most likely get the wolffs just for their name on the shell, but for plain everyday carry use the metalforms are just fine.
That said, first thing I do with any new gun mags I get is install wolff springs- I trust and like them.