I bought one WC mag for my 1911 Kimber and it causes jams where as the Kimber mag doesn't. I know that goes against everything you hear but I have to say this is my experience with a WC mag and my stock Kimber mag.
I have all 4 of the Ruger SR1911 series (my last acquisition 9mm) and I have found Chip McCormicks to work well in my .45 cal. I have not had the chance to buy any 9mm magazines yet to give you any references. I would like to try some Wilson's out however, I have not the funds to pay the premium (I feel) that they ask in price. Fill a .45 cal Wilson mag with Hornady Critical Defense rounds and you have an easy $55.00-$60. in your hands and have a high priced mag. I might carry 1 or 2 however for self defense but not use them on range rounds.