I've shot both and own a 442; no downside to the 442.
The ruger has some plastic parts like the housing and trigger guard, if that is a concern to you. ruger did recall some for the plastic houosing, but I believe that is fixed on the new ones.
I shot one with the laser grips, not to my liking. The trigger guard is oversized on the ruger; could be a concern for small packaging in a CCW; but some will like it. Personally I never found the j-frame trigger guard too small, so why change!
Both Ruger and Smith make fine guns; you will be happy with what ever one yoou chose. Try to shoot both first; if you are not use to a DA snub-nose they are extremely difficult to shoot accurately.