I have both. My stainless is a 4 5/8" .45 Colt. My blued is a 6.5" Blackhawk. After 20 years, they both look good, but I don't carry either all that much except when outdoors or hunting with them. Both are supremely accurate and quite strong/powerful.
Blued is lighter due to the anodized aluminum grip frame, which will fad and look a little off color to the rest of the gun, and the aluminum ejector shroud. Stainless is all steel and a few insignificant ounces heavier. I prefer stainless, the look of it and the corrosion resistance of it, but it's not a biggy. I carry stainless guns AND blued. The blued just get all worn looking, but they still shoot straight and that's what counts.
I liked my stainless .45 so much I put stags on it (sanbar, the best) and had some quality engraving done. It still looks sharp and it's an outdoor working gun. I just wanted to personalize it a bit as I know I'd never trade or sell it, shoots too danged good.
Anyway, six of one, half dozen of the other. All these stainless haters are more than likely conservative in nature and purists. Stainless guns have been around for 40 years, but some refuse to acknowledge the material's strengths as it flies in the face of tradition to them. Well, now days, there's titanium and scandium and polymer and all sorts of irritants to the traditionalists. Me, I see the strengths in 'em all and won't close my mind to the possibilities of other materials of construction than blued steel. I'm sure if these traditionalists were born in 7000 BC and suddenly transported to the present, they'd probably prefer atlatls and stone spear points to a .460 Weatherby.
There are lots of these types around and this sort of thinking has its place if you're buying a black powder gun for reenactments or something. If you just wanna look at the gun, choose what suits your eye. But, new materials have their place with working guns, depending on the job at hand. A single action revolver isn't a pocket gun, of course, but neither is it traditional. A Blackhawk is a modern firearm, not a '73 Colt clone. It has legitimate uses afield, not that the '73 Colt is useless, but I like the strength and accuracy of my blackhawks for hunting and hiking. IMHO, material of construction between blued and stainless is just a matter of personal tastes as either will work in the field. It ain't like the blued gun is going to corrode to dust while you're out on a week long backpacking trip or something. It's just a matter of personal taste. Feed your own desires, either will work for you.
BTW, Highpower, what are those grips? I bought a pair of grips very similar to that and out of the same type of wood at a gun show out of a box of assorted used stuff. I have no idea who made 'em, but they sure feel good to me. I kept 'em on my .357 for hunting. They don't really look right to a traditional eye, but they work.