It depends on your purpose
Why do you have an LC9, LC9s, or Lc9s Pro?
If you want to burn 200-300 rounds per range trip, your trigger finger will thank you for using a striker.
If your focus is split times, a striker has the speed you need.
If ultimate accuracy is your goal, a shorter trigger requires less skill and effort than a longer trigger.
If you want the most assurance that the potentially life-changing shots in an adrenaline-charged self defense situation are fully intentional, a long DAO trigger may be perfect.
I enjoy the short, light triggers of the striker-fired guns more at the range, but the longer trigger of the LC9 provides an extra margin of safety I prefer in a carry gun.