Crane paper & b9180
Yes, I have been trying both Silver Rag and Museo MAX. Both are exquisite papers.
Silver Rag prints very well for me on the HP B9180 using Crane's profile, supplied on their site, and using the "HP Advanced Soft-Gloss" paper setting. Their is some slight bronzing, but color fidelity and saturation are excellent.
The Crane profile for Museo MAX had some significant issues. Specifically, there is an overly abrupt transition to black in the shadow regions, leading to a blotchy unsmooth look.
However, Neil Snape provided another Museo MAX profile that works fine, without the abrupt transitions. Paper setting for Museo MAX is "HP Photo, Matte".
These papers are not cheap. But I would recommend both very highly.
I am planning to test the Silver Rag against Hahnemuehle's Fine Art Pearl, and Innova's Type-F Gloss. I have a box of the latter, but Innova hasn't posted a profile for the HP B9180 yet.