I agree with Bob Wright, the one thing that makes me sad about my SP101 is that it will never attain the beautiful holster-worn look of my Beretta.
When new, I think stainless looks better, but a worn blued finish tells a story. I prefer blued for handguns and stainless for rifles. As for the extra maintenance, well I clean and oil my handguns more often than they need anyway. No chance of rust either way.
So since this is in the handguns forum, I vote blued.