I've run just about every magazine out there over the years (about 30) through 1911s and have found that the modern magazines exhibit the best characteristics for my needs.
Factory magazines are what they are. ine have been hit or miss from the various manufacturers and end up in their own little box. Removeable base pads, polymer followers, changes in geometry, construction and all the other little extras have made things more convenient and functional so that's why the aftermarket industry is as large as it is in this respect.
Back in the day, I ran Wilson Combats in 7 round form and then moved up to the 8s for the edge. Back then, they ran OK but still would throw you a bobble from time to time. I now relegate the old Wilson's to back up and training needs.
As usual, you'll find folks who will chew out 8 round magazines and guns shorter than 5" as being less than reliable. Somebody somewhere must know better as aluminum framed guns, Commnader and Officer sized guns and 8 round magzines have been cataloged for, not years, but rather decades now. In a world moved by economics, this speaks volumes.
Eventually I settled on the McCormick 8 round magazines and run them exclusively with the exception of trying out a new model from time to time. The "+" mags have worked well in my LW Operator as well as my LW Commanders and LW Champions. The Wilson ETM is in the testing fold now but the jury is still out as I don't have that many rounds through them. Yet.
All of that said, there are an awful lot of variables with any pistol/magazine combo and what works best in your specific gun is the way to go in accordance with your budget.
One thing is for certain though; you've never had a better time for choices.