CCW is a balancing act, enough gun to carry, but can be carried all your waking hours.
My solution to that has been the same model pistol for practice and matches, that is carried for work, and CCW, but not the same pistol.
When your hand goes under your concealment shirt, tee shirt or jacket, aiming for a defensive pistol, the same grip, trigger pull and sights that you practice with define your effectiveness in a fight incorporating the use of a firearm, but not necessary the exact same pistol, just the same model.
My solution, right or wrong, is a Glock 19, same holster, same belt, same sights (TruGlow) with the new and improved Glock factory trigger.
But two separate weapons, the match guns, thousands of rounds, the carry CCW and work G19 (Same one) only hundreds.
Just as important IMHO, is the spare magazine, same place, same slightly longer G17 model (two more rounds) even the same magazine pouch.
Never ever having a malfunction with the carry gun, the confidence in it is absolute.