I own CMC mags. They are affordable and just simply work very very very well in my 1911s. I do own a couple WC 7 round rebuild kits that I put in some old CMC Stainless flush tubes. They have been loaded for over 5 years now and are still strong and function 100%.
I just have no reason to buy WC 8rounders when my CMC power mags work just as well for less. I do own some ACT and MecGar 8 rounders and they function 100%. If you have the money than go for it.