Interesting that you ask.... My 642 was my everyday carry, but has now been relegated to only occasional carry (as has my 640). My current carry, which would be the one I would name if I could only have one carry gun, is the Ruger LC9s. I am trusting the "experts" that the 9mm round is as effective for self defense as is the 38 Special, and the LC9s is just as easy to conceal even in light clothing as is the j-frame. With a greater capacity, and with the reality that I can shoot it far more accurately than I can the 642, its a clear choice for me. So far this gun has been very reliable as well. And carrying a second mag is just as easy as carrying a speed strip, and easier than a bulky speed loader. I like the LC9s (which has a really great trigger by the way) so much that I considered selling my 642, but then I decided to just add a laser sight and put it away for when I want to carry a revolver. FWIW, I bought the LC9s on a trip to the gun store to look at and possibly buy the S&W Shield, but the trigger was so much nicer on the Ruger, and it fit my hand just as well as did the Shield, that I bought the LC9s instead (and it was a bit less expensive as well).