I have a 452, and 453. They're both really nice. Mine are older with standard triggers but I did good trigger jobs on them.
The only thing I'd change is the swing safety. It's a good, positive safety but operates in reverse compared to Mod 70 swing safety's.
I have several 22's and 17's: Marlin, Ruger, Savage, Mauser, Winchester, and I use my CZ's more than any others