OK, Colt Diamondback 4" bbl. blue steel, .38 SPL. I love my Detective Special and like my Police Positive a lot, and would like the adjustable sights on what is essentially the same gun. I have always thought the vent rib was classy looking, too.
(But I'm most likely to actually GET a S&W Mod. 30-1, 4" bbl. .32 S&W Long, to which I will have a good gunsmith add adjustable sights. Purpose: lightweight & compact trail gun, and could adjust sights to my 115g, 850fps load.)