Hands down the Glock 19. It fits the bill for all three of these purposes. Out of your list the sig is the most appropriate because its modular. The CZ is a great gun, but its too large and being all steel makes it too heavy for EDC.
Today, a buddy at work mentioned (again) that he wanted to add 'a' pistol to his home defense shotgun, his only gun at the moment. Another buddy and spoke with him about a bunch of options, over lunch, and ultimately I recommended the Sig P320. Mostly because he just wanted 'one' handgun, and didn't plan to ever buy another; and he already seemed to have a bias in favor of Sig. I think someone else had already convinced him that Sig was the absolute best. We explained that there were a handful of top tier production guns, and Sig was in that group.