The 3" in .357 was my agency's issue gun for about fifteen years. Tough little guns, and cop-proof to boot. I had one issued to me but never carried it, preferring a 4" barrel Ruger for better balance, velocity, and as easier to shoot well.
Sometime in the late 80s I picked up a 4" stainless .38 Special, heavy barrel, round butt Six. It was a little-used police trade-in, and the best fitted Ruger I have ever seen; it locks up like a bank vault. Only trouble is that the round butt doesn't handle well for me, which sort of surprised me.
I keep it around just because it's such a well made example of the breed.