Blued, definitely and without a doubt blued.
S&Ws to me have always been most beautiful when blued. History, nostalgia, a way of how things should still be done, call it what you want but they are just what I think a revolver should be.
That's why most every S&W I will ever buy will be something that is no longer produced, those cheapskates stopped making blued guns with the exception of the performance center offerings.