Other; I prefer "self-decocking" DA pistols. This means DA-only, or a rough equivalent. If there is a hammer, it follows the slide down. Glocks and such hybrid systems can mimic this effect, even though there is no hammer.
Actually, I have no personal need for my pistol to be de-cocked while loaded, and a 1911 is fine. (I started handgunning in 1982 or 1983 with a 1911.) My employer no longer allows single-action-only primary duty pistols. Glocks, the S&W M&P, and SIG P226 and P229 are allowed, and the SIGs can be decocker or DAK. When I had to stop using 1911 pistols for duty, I used Glocks for over two years, then went with SIG DAK in 2004. (We buy our own duty firearms, as is normal in this region.)
I have owned decocker pistols, and trained to a fairly high level during 1991-1993, when I carried a SIG P220 on and off the clock.