Just a counter point, FWIW. Bruce Gray, his crew, and the folks over at SigForum (all, dare I say, SIG fanboys) all acknowledge that there were real QC issues for several years at SIG. I even seem to recall reading an interview that a SF staff had with Sig management that acknowledged the same. They all believe that SIG turned the corner a couple of years ago with their classic and polymer lines. . . diamond plate and rainbow finishes be damned. The consensus seems to be that SIG is making as good or better pistols than they ever have. I've certainly been happy with my 2013ish P226 and P224.
That said, I don't blame psalms144.1 and others for feeling they've been burned one too many times.
Cheers,
D