CP99 single action involves pulling the mock slide back, a novelty at first...but not for long.
CP88 has a good following, extras available (walnut grips, longer 'competition' barrel/compensator, fully adjustable sights...expensive).
S&W 586 very nice. Six inch barrel seems most popular (looks, fps, long sight base). I have also been looking for
a four inch version but not seen any used ones.
You can get a new pistol from Germany for the price of a used one over here.