My favorite pistol action is DA/SA hammer fired with a safety and a decocker (like a V1 HK USP), but it is hard to find that in a carry sized gun. I have a Springfield XDE that I like because of that action, but these days I find myself going back to my M&P 9c quite often. It isn't much wider, is actually a little shorter, and holds 12 rounds instead of 8 in the XDE. I still have a thumb safety on my M&P though.