Obviously the answer is to get a steel framed 1911 so you can spend an extra $grand to get it to function with all types of ammo 98% of the time.
With all due respect, all sigs gouge and it is actually a sign that they left tad bit too much metal in the machining process rather than not enough. There was nothing wrong with the first gun and someone else will get a good deal on a gun that will be very accurate and shoot for a long time.
It's amazing how many aluminum frames crack on the web yet on the streets, I know many who never have a problem with Sigs, Smiths or Berettas.
Guess what if you shoot alot, you will have problems. I don't care if we are talking shotguns, rifles or handguns. There is simply no such thing as a fool-proof handgun.
I have relegated handguns to what they actually are: a last ditch, stop gap tool used to work your way to the rifle or shotgun. I have much less stress these days and actually buy guns because they shoot well, are reliable and feel well. I don't bother myself with what could happen. As Each day passes, I see more and more the logic of buying about four Makarovs with plenty of ammo and spare parts while focusing my money and time on long guns.