I just came across this: Ed Brown Products is offering a 1911 magazine exchange program. You send them an old 1911 mag and $10 (or $15 for a black nitride mag), and they will send you a new one, on a one-for-one basis, up to 20 mags. Shipping is $15 extra.
The reviews are good for these mags, so I am considering this, especially since I have a few older GI mags that have seen better days. But, before I do, I thought I would check in with the MGO community first. Has anyone used Ed Brown mags?