Richard, I use the 24" D-roller for my 24" roll papers (Photo Rag, Ultrasmooth FA). It's a perfect match. Flat prints in less than a minute, with no hassle, no paper markings, no worries, etc. (due to the materials and design used). Considering what it does for me, it was one of my best gear purchases last year.
Shades of Paper also offers a nice discount on roll paper if you buy a D-roller.