I have owned a 642-1 for a long time. I like carrying it, but don't shoot it as well as I'd like. I also have a .45 Shield. Last year I bought a 640 Pro, and I love it. It has become my EDC 90% of the time. I shoot it much better than the 642. Recoil is negligible with .38 Special, and very manageable with full house .357's. I considered the Kimber, but....I really don't like Kimber. My shooting buddy had two Kimber Solo's, neither of which were dependable despite multiple trips back to the factory. Fair or not, I guess his experience has tainted my opinion of Kimber. I did seriously consider the K6S, but the 640 comes with the lifetime warranty. I love the sights on the 640. I have not used the moon clips, nor do I have plans to do so, but you never know. Finally, I got mine for $659 shipped last year, from an internet vendor who is no longer in business. The action on my 640 Pro is improving with use. I have several hundred rounds through it, and lately have been dry firing it with snap caps.