I carry a 4" Model 29, and I highly recommend it both as a CCW and as a "fun at the range" gun.
EDIT: I just realized you wanted a 38/357. I have been very underwhelmed with my 686 Perf Center, so I don't know what I'd recommend. I'd probly keep my eyes peeled for a M19 snubby or a 3" M13. If you are buying a new gun, my recommendation would definitely not be a S&W.