I'm with NWS on this. These and Wilson ETM are the only ones I run.
I do like the Tripp Cobras, but they aren't as readily available as the Wilson's.
I got a drawer full of factory take off magazines that have never even been loaded...
I edc a WC 1911 and naturally I only use WC mags. The 47Ds are awesome (used them in every 1911 I've ever owned) and the ETM mags are good too. Not sure if they are really "better" but neither model has ever given me a single issue. Not 1 mag related problem with the WC mags ever. Chip McCormic has good mags also. I have buddies that swear by them also.