My issued M9 never had a malfunction. My Smith and Wesson wouldn't shoot at all when I first got it. 2 hours of web surfing and a quick inspection revealed that the main spring tensioner screw had backed out, customer reviews say it could have been a previous owner trying to lighten the trigger pull. I cranked it down tight and have never had another issue. My grandfather had an old Colt .22 that would hardly ever return to battery after a shot, I suspected a weak spring, never heard the verdict.
My mom has one a JA 22, she loves it. Reliable for her as long as she doesn't top off the mag.
We all know what opinions are worth, but here are mine.
For semi reliability it's simple. Sig, HK, and Glock. I just don't like Glocks. They're like the old '70s brick Volvos. You know it'll work forever, but it's not getting you laid.
For revolvers, You just can't beat a Ruger Security Six.
I've owned two guns that never experienced a single failure, no matter what ammo they were loaded with. One was a Springfield XD9, which I no longer own (too bulky and heavy) and my current Bersa Thunder 9 Ultra Compact Pro. Never owned a Glock.
+1 on the Bersa. It just pounds them out there everytime. Now I did have a slide guide rod hole wear out with the slide being replaced, but it stayed shooting right to the end of th at slide and has picked right back up where it left off.