Really happy with Brownells 10 round 9mm mags.
~$25
https://www.brownells.com/magazines/handgun-magazines/magazines/1911-9mm-magazines-prod84195.aspx
I have had 0 issues with these in my Springfield 9mm 1911.
They have baseplates installed.
I use these for USPSA so they don't always get inserted with loving care.
Less expensive than the Springfield ones and hold one more round.
probably 10K rounds thru the ones I have so they have seen a bit of use. (but I do have 7, all work fine, so not a sample size of 1)
I suppose I could pay more for Wilsons but when these work fine why?
Walkalong had a write on 9mm 1911 mags where he tested a few maybe he will link it for us.
These look the same minus the coating
https://www.cdnnsports.com/1911-10rd-9mm-zenith-magazine.html
The add says Zenith the package they came in says Metalform.
I ordered a couple (they were on sale a while back for $13.99 but have not had a chance to test them yet so I can't say for sure how they are..
My gun is fine with the Springfield mags, and the Brownells mags (will feed empty cases)
I did try one aftermarket one that did not work out well (ok but not perfect) but I forget what flavor it was. (may have been Mec-Gar but not sure)
The Brownells mags can be a little pain to unload by when they are full but really not an issue IMO. Most of the time I unload them by shooting