I have to admit that my models 19 and 66 were not as smooth as either my Trooper or my Python. Were talking 1980s now. My range master/armorer (Smith Guy btw) worked on my Smiths and made them a lot better. I did shoot a Security Six and did not find it any better (or worse) of a weapon, however. Ruger, Smith, and Colt all make good, rugged, American firearms and I never really had any trouble qualifying with any of them. Maybe I'm just not that much of a stickler for "perfection". My handguns all did what they were supposed to do when they were supposed to do it. Now I have all auto loaders (469/Sigma/410) and they all work as intended also. Just goes to show you all these years later I still must like Smiths!