I've already said a lot about Sigs, I own several of them and I'm obviously a big fan, so I'll only add:
P220 bought used, >10,000 rounds down range, 4 FTF, all of them due to underpowered ammunition, no malfunctions or breakage. I've shot almost every variety of factory ammunition FMJ, many varieties of factory JHP, some old surplus and some reloads (which accounted for the FTFs). Field stripped regularly, never detail stripped for cleaning. The bore of the barrel and it's rifling are still flawless.
Just recently, the roll pin that holds the firing pin block in broke due to the wear, but the gun still fired accurately and reliably until I noticed and stopped shooting it. It has now been sent back to Sig for a well earned full service detail strip and spring replacement.
If you need to rely on a firearm for your life, a Sig is one of the best choices you can make.