I love CZ's, and have several, including a CZ 75 B. I don't think I've ever shot it in DA, even though it is DA/SA as even you bring the slide back to seat the first round the hammer is back, and you are in single-action. It has the safety, and I am uncomfortable putting the hammer down on a loaded bullet with my thumb on the hammer, pulling the trigger. I shoot it at the range, and it is my home defense gun, so having SA only is a good thing. In SA the trigger was good from the beginning, and I must have shot a couple thousand rounds by now. When 'dry-firing' the reach for the trigger is a bit far in DA, but comes to a more comfortable position in SA.
All the rest of my CZ's have a decocker... which I really like.