Conrad:
I like the "house" brand papers from InkJetArt.com - they are basically the same premium papers as Epson premium papers, and are available in a wide variety of sizes, including up to a 500-sheet box of 13x19. I use their Luster paper in the 9180 and get beautiful results, in fact better than I got with HPs advanced paper. I also use this paper on Epson and Canon pigment printers.