Ive not owned a CZ 75 yet (I know, I know, its still on my list), but I have had a couple of CZ-clone Witness pistols and 4 M92s.
The Witness' were some of the most accurate and reliable pistols Ive ever shot. The grip frame always felt a bit strange to me, though. Also, as mine were full size steel-framed variants, they were very heavy. Only way I would ever consider carrying one would be the compact version.
I really didnt put that many rounds through them, maybe 500 all told, and never had a hiccup. I dont know of their are any common wear items or breakage parts on the 75........
The aluminum-framed Beretta is lighter, though a bit bulkier, but fits my hand better. One of mine was incredibly inaccurate, but the other three were all very good, though not to the level of the Witness. Ive had perhaps 3000 rounds all told through the pack and can only remember one jam not related to a parts breakage.........
However, Ive also seen them break. Ive had one broken locking block (very common on older M92s), a snapped hammer lever (somewhat common on newer M92s), and a broken barrel lug (very rare).
The good news is parts are plentiful (for now), and they are easy to work on. If you get a newer M92, they will have some polymer and polymer-coated parts: trigger, LH safety lever, mainspring plug, mag release, guide rod, and hammer lever. From time to time, Beretta will offer a steel parts upgrade kit. I had a bit of trouble tracking down steel bits to de-polymerize mine, but it was TOTALLY worth it. The trigger and action smoothed out 100%
Both of mine also now have the new, improved locking block. At this point, I feel confident enough in the guns that I would pick them over any of my other handguns ( except maybe my P226), to carry into the Zombie Apocalypse. But as they came from the factory, eh, not so much.
Which of course brings up the queston- have you considered a classic SIG?