Some of that robustness is more apparent than real. Many DA/SA guns have a single trigger bar, for example -- Berettas and SIGs have a one-sided bar -- and we don't hear about them failing. The P-07 and P-09 have been out for several years now, and they don't seem prone to failures, either.
The early problems with the P-07 had to do with the polymer frame --and an unsightly bulge on the side of the frame. As I understand it CZ changed the design and polymer formula to resolve what was a "cosmetic" issue -- as it didn't affect function. It just looked WRONG when it happened -- on some guns!
The standard CZ is robust, but part of that APPARENT robustness (and many extra parts) was arguably there to make a unique and complex DA/SA gun (which could also function as a SA gun only, if desired) also be able to function with a decocker. (Not interchangeable, but same basic mechanism.)
I was amazed at how crisp the trigger on my used P-07 was the first time I shot it, and as far as I know, its absolutely factory stock. About the only tuning it could benefit from is a slightly lighter main spring -- but it shoots so well, I'm hesitant to change it (if lighter springs can be found).
Talk to David Milam at Cajun Gun Works. He's very familiar with the standard CZs (both safety and decocker), the P-07/P-09 (which uses the Omega system), and the new Sphinx pistols. He also works on the Turkish-made CZ-pattern guns. David is one of the best CZ gunsmiths around, and has created a number of custom parts for different models, and does tuneups for all of them. He can probably give you the best (as close to objective) answer available.
David participates here from time to time, but tends to keep a low-profile (probably thinking it improper for someone in the gunsmithing business to make too great a presence.) Others rave about him and his work -- me among them.
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