I have guns with both. My newest acquisition is a CZ75B Omega with decocker, that comes with safety levers that can be installed instead.
I found I like the decocker personally. I installed the safety levers to see if I liked them, and somehow on this gun I just like the decocker better.
I...
Me too, I've been on the lookout for one in 45ACP, but it's not at the top of my "gotta have it" list. A Birds head model in .357 might just go to the top of the list. Hope Ruger is listening!