I have not shot the CZ enough to comment on its reliability, but I can tell you that there is no pistol proven to be more reliable than GLOCK 9mms. My personal G19 has almost 30,000 rounds down the pipe with zero malfunctions. The CZ is a similar sized weapon, but heavier and more complicated. Personally, I don't really care for the DA/SA operation system at all. IMO, you are much better off with a consistant trigger pull for fast shooting under stress, whether it be Safe Action, cocked and locked, or DAO.