I'm currently evaluating three of the new fibre papers (I like them all!). But as they're quite pricey, I'd like to find a less expensive paper for day to day proofing that uses the Photo Black cartridge in my R2400. Swapping out the black carts for my normal matte proofing paper is unacceptable. (Not to mention, matte paper does not tell me how a print will look on the semi-gloss papers.) BTW, the three papers are, from highest to lowest cost, Hahnemuhle Fine Art Baryta, Innova Semi-matte, and Ilford Galerie Gold Silk Fibre. In case anybody wants to know, here's my take on them: Ilford: best value, warmest white, smoothest surface, ink appears to sit very slightly on the surface. Innova: Slightly blue, least bright, smooth surface with unobjectionable texture, curls at edges a bit; my favorite, but just slightly and only if cost is ignored. Hahnemuhle: bright neutral white, very saturated, slight luster texture that shows up when the light isn't just right, ink sits down in the surface like a silver print, expensive!