Digital BW, The Print

Does anyone know a POD online company that can provide really neutral black and white photographic reproduction?

I have yet to see any of these outfits like Blurb that even come close to providing acceptable reproductions without out color casts or extreme metameric failure. Even the "sepia" hued books I've seen look horrible.

But maybe someone is specializing in pod bw photo books. If not I wonder why. 

John