I probably like blued a bit better but would normally choose stainless for its relatively "tougher" characteristics, but my favorite Blackhawk is the .45Colt/.45acp convertible particularly in 4 5/8 inch trim. I shoot a lot of 45 acp in these and .45 acp is widely available, easy to shoot, accurate, and relatively inexpensive (just a little more than .38 special and a little less than .357 magnum), and easy on the ears. This version is not only available only in blued, but the weight and balance of the alloy grip-frame and ejector rod housing revolver is, to my mind, just perfect for the 45 acp power level. It is, IMO, the best of all worlds, everything needed and nothing not. My favorite handgun, period.
Another plus of the .45 acp cartridge in these single-action revolvers is their short length enhances both loading and extraction of fired cases and their relatively low pressure ensures that cases generally fall free of their own weight without needing an ejector stroke.