Sigmas have been through a few generations. Gen 1's were good, the current is good, Everything else was shit. I've put over 8,000 rounds through mine in the past 4 months (uspsa shooter) and have only had about 7 failures. All of which were caused by the same thing(s) dirty ammo on a hot day with a shit load of rounds through it and me being tired. It was FTE's everytime. The chamber would get nasty, it would be so hot I had to wear gloves because the plastic was burning my hand and it would only be if I loaded a mag, dropped the slide, and let it sit long enough for the brass to expand. I may have had the exception gun, but mine has been wonderful. My main complaint is that my trigger finger has muscles from the damn 12 pound trigger pull. I do know a lot of people that have talked bad about them, but every single person I've talked to said that they go there's after Glock sued and Smith changed the design to conform with the ass kicking they took in court.