I love rimfire handguns. I learnt pistol craft with an old Colt OMM and enjoy my 1961 vintage OMM.
I have this K-22 since a few decades and consider it to be as accurate as any rimfire handgun can be.
The Swiss-made Hämmerli 212 is very high quality and anyone who has shot it, is amazed by its trigger.
The Hämmerli International 208. I used to shoot one in ISSF pistol matches in my younger years.
I have five rimfire Korths, the three newer ones towards the bottom of the picture are all excellent shooters.
How could I choose just one? That would be unfair to the other fine guns - and I did not even mention my two Ruger MkIIs and my S&W 22A so far...