In an exclusive to DIgital Art Supplies, Epson, Ilford and Moab have teamed up so you can sample two sheets of each of these papers.
 
Ilford Crystal Gloss
Ilford Metallic Gloss
Moab Slickrock Metallic Pearl 
Moab Slickrock Metallic Silver 
Epson Metallic Gloss 
Epson Metallic Luster