I was all set to buy one 10 years ago..... had one located, used for $350 ... went to get it, and there next to it in the case was a LNIB Colt Trooper Mark III, for $325.
Got the Colt ..... but would get the Ruger if the Mark III was unavailable, which it is.
As for CCW with a .357..... sp101, 3" is smaller and more robust than a S&W 13 ..... also easier to find. The trigger is not as nice to start with, but if you are dry firing it daily, it smooths right up pretty quick.