My carry gun is a first generation Glock 26 - But - my favorite handgun bar none is the Sig 226. Double action, really nice radius trigger, smoooth DA pull and breaks super clean in SA. Decocker and no safety. And subjectively it unfolds and folds the smoothest of my semi-autos. Very precise. Glocks sound and feel "crinckly" when fired, Berettas feel too mechanical and the slide seems to travel forever. I'm not knocking Glock, Beretta or any 1911 style weapon but in my opinion it the Sig Sauer is just a precision handgun. Which has always made me wonder how it would fair in lesser conditions - dirt, mud, sand. I can't speak to the reliability of Sigs in those conditions but it's never once failed to go bang at the range.
BTW - MPs have been around for some time now and are considered top notch.