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JCS, it took me a while to realize that using what most of the top shooters use is the way to go. For USPSA Production division, the CZ Shadow 2 is dominant. In Carry Optics, it's gaining traction. Everyone I know, including myself, who has switched to a S2 is happy. I don't know anyone who has switched from a S2 to something else, unless they switched divisions.
Lack of a decocker is an advantage, IMO. Fewer parts, and easier detail stripping. Putting the hammer down after "make ready" is simple and safe, if you know the trick. In comparison to the other things we need to be safe about while running around with a loaded gun, this is at the bottom of the list.
I compared my lightly-modified (aftermarket springs and firing pin) Shadow 2 to LTT and Wilson 92s. I found the S2 to be superior in both DA and SA, as did the owners of the Berettas.
Cheap, readily available spare parts. Easy to work on. Extremely durable and reliable. And in my opinion, better ergos.
Unless you carry a 92, I can't think of a single reason to choose one over a Shadow2.