I've stated in several different posts that of all the handguns that have come and gone over the years, the one I keep kicking myself for trading away was a S&W model 547 9mm revolver. IMHO it was a great, low recoil, easy to carry trail gun. The S&W model 659 auto that came next just didn't suit me.
Oh well, like the bumper sticker says, Stupidity should be painful.