In short, Epson 4xxx printers with the Epson-Noritsu dyes appear to result in a very useful printer format for glossy printing. I have been using the 17" roll paper version of Red River Paper's "Polar Pearl Metallic." (There is something unique about these metallic papers.) And did I mention no settling or clogs due to the dyes? I know why Epson is producing the SureLab D3000.
My 4000 "NK2" setup is described at http://www.paulroark.com/BW-Info/4000-Noritsu-2K.pdf .
Paul