Centerfire systems in KY has police trade-ins for about $300 plus shipping. S&W blued model 10s and stainless. If I were in the market, that is where my money would go. I am a colt collector and the K frame is right between the size of a police positive and larger official police. Out of Colt, vintage ruger service six or S&W, S&W is the only one that you may get factory service. I love my Colts but I have a gunsmithing manual to correct minor issues myself such as timing. And if you found that vintage ruger working, most likely it will stay working. I would so much rather own a used American made gun than a used foreign handgun made to under price its US counterpart.