The Smith Centennial series are all great guns. The Airweights and even lighter versions are not fun for most people to shoot much with .38 Special +P. Many experienced shooters say that .357 Magnum in a 14 ounce gun is quite painful.
I have severely arthritic hands, so my EDC for over twelve years has been an all-steel .38 Special +P Model 640 no-dash. Only weighs 21 ounces, not burdensome to carry, easy to conceal and comfortable to shoot. I don't feel under-protected with it loaded with +P ammo.
Many people suggest practicing with a steel gun and carrying the Airweight. Nice idea, but not one I can afford in my old age. It does make a lot of sense.
"Don't let macho be your epitaph."