Stainless for Me and Me Family!
I have to admit that the stainless is the one I'd take. Not because I don't want to take care of it, but because that nice blue will run off in the holster. Also, I have some friends who hunt, and they say that in the early morning mists that small bits of rust start forming before they even get the gun home to clean it. There are some areas that are so conducive to rust (in rainy parts of the country or near the ocean) that it's one more thing not to have to worry about. Stainless also is somewhat less conducive to gas cutting than blued steel.
In the West, standard steel is fine. I admit I liked the old bluing better than what's offered now, but it's a personal preferance on whether one likes stainless or not. The ones who don't tend to think of cap pistols and nickel-plated revolvers, but I had a 29 that was nickel plated and it was gorgeous.
I had a Beretta 70S that got a bit of rust on it in no time and I used to apply Break Free to it each time I examined it. But if you miss an area, it's really crummy to see that light coating of red. I still can't get rid of it entirely because I don't want to remove the blue around it, but I've tried using very fine stainless steel wool and a strip of leather and nothing removes it entirely.
Out, out damn spot!