My recently purchased 3953 is back from the gunsmith, with a nicely bead-blasted slide plus barrel and take-down lever. Not much can be done about wear or marks on the aluminum frame, but refinishing the slide makes the overall pistol look very good. And it shoots great (I also replaced the recoil spring).
One of the hidden benefits of a S&W 3d Gen stainless steel slide, and of the all-stainless pistols, is that they can be very nicely refinished for a reasonable cost. When I say "stainless steel" I mean pistols that are silver-colored, e.g., "in the white."
Mine was bead-blasted by a well-known and very fine gunsmith in N. Va., for $87 = well worth it. (I'm not sure about mentioning names on the forum, but if anyone wants the name/address/number for this gunsmith, send me a PM).