Hi Pete,
Welcome to the wonderful world of "CZ Choices".
I guess the first question that you need to answer for yourself is: "What do I want to use the pistol for"?
There are different CZ pistols for each choice: 1. Personal Protection, 2. Home Protection (for this I recommend a shotgun, not a pistol), Competitive Shooting, such as IDPA, Steel, Cowboy, etc. 3. Bullseye (timed events at paper targets). This issue narrows the field for you.
Calif. has an approved pistol list. Sorry, I don't know the exact name but check it out, it will limit what is OK to purchase in your State. Also some States have a limit to the magazine capacity. Find out if Calif. does; FYI, CZ offers 10 shot capacity mags as a no cost option.
Next I suggest you touch, feel & shoot different CZ pistols. Your hand size, grip may be different from mine. One of the CZ pistols I own is the CZ SP01 Tactical - it's heavier than the other pistol I have, the CZ 75BD. I prefer the weight of the CZ 75BD. Also the feel of trigger can vary from on model to another. For instance the Omega trigger feel is nicer to me than the standard CZ SP01 trigger. (In any CZ pistol consider have either CZ Custom or Cajun Gun Works work on the trigger. It will add greatly to your shooting enjoyment).
I'd post a request on this Board to request meeting a CZ owner in your area of Calif. to discuss the options & check out how they feel in your hands. If you were in the Myrtle Beach area of SC I'd take you out to the range to try my CZ pistols.
All the best,
Tony