Lots of dis-satisfaction out there with the factory trigger, and there are several upgrades:
1. 80 for the 20 solution that a lot of people like is the HBI spring kit. I forget the price, but it is lov, and addresses the pull weight of the trigger, which is the biggest complaint.
2. Trigger tuning, by CZ Custom, or Shooter's Element will clean up the trigger, though it is still a 1-stage.
3. My trigger, ShootingSight, replaces the trigger with a whole new designed system that is 2 stage. I suspect that the smoothness or pull weight is comparable to option #2, as all will polish, but at the end of the day, 1-stage versus 2-stage is a personal preference, and if you want 2-stage, this is the only way to go.
Art