Can't be done.
75B Mil: This one would get less use, except it was the first. I can't ever seem to part with it, despite many offers. Theoretically, it has been "replaced" by other guns, but I have a real attachment to it.
97B: Just an excellent, accurate handgun. It is a .45 ACP. I can't say enough positive things about this model. It is a .45 ACP. Beautifully designed and executed. It is a .45 ACP...
75B SA: Currently the most accurate handgun I own. (Sorry Colt, but it's true.) The 97B is ungodly accurate, but the SA is frightening. I would have to shoot for a LONG time to fully realize the potential of this gun.
vz 75 (aka pre-B): This is a "transitional" Model 75. I have had it for one full week. It may prove to be as accurate as the SA, once the trigger breaks in. (It was LNIB.) The lack of a firing pin block makes for a much smoother DA than a 75B. Right now, this is my "favorite," because the shock of finding one in this condition hasn't worn off...
Next CZ: a rifle, probably a 550 Lux. I haven't decided on the caliber yet, because I really don't need another .270 (yet I WANT one). Also, the 527 actions are incredible. Every time I fill out a CZ-USA warranty card, I check the "rifle" box for "next purchase," yet I buy another handgun...