I'm unfamiliar with the new "omega" trigger, so can't address that...
But with the other CZs, the triggers seem to vary -- from mediocre to pretty good. Sort of the luck of the draw. Most of them smooth up with use (400-500 rounds). The CZ Forum has instructions (well illustrated) for those who want to do a trigger job themselves.
I'm too impatient to shoot 400-500 rounds waiting for the trigger to improve, and get a local gunsmith to work on the trigger, when it seems necessary.
The 75B SA has the greatest potential of the "B" models, as it can have a two-way adjustable trigger, adjustable for take up and over-travel. (The Firing Pin Block mechanism needs tweaking, as well.)
An 85-Combat, converted to SA only, might be even better, as it does not have the firing pin block.