Hi, I have the 4800 and love it. I am printing only on Enhanced Matte and Ultrasmooth Fine Art now, so I have been using just the Matte Black ink, in part because I can't afford to jump back and forth. I have seen several posts of people using Photo Black on matte surfaces for both color and black and white. I would be interested in people's impressions of how much you lose by trying to use the PK on a matte paper in color or B & W.
thanks, buying a second printer is just not an option, sw