3 1/2 " M-27 Vs, the M-58
I voted for the M-27, for several reasons: The model 27 was the flagship for S&W during the entire time it was produced, the fit and finish are second to none. The .357 magnum round and any number of the quality pistols chambered for it is IMHO the best and most practical all-round handgun cartage ever developed.
The M-58 is an fine revolver in it's own right, but sadly the .41 magnum has never caught on and I don't hand load.