Here are some more details about the paper types:
Both the fine art paper and the linen-textured paper are acid-free, archival-grade matte papers. The colors look the same when printed on either paper type. The two main differences between them are the textures of the papers and the thickness.
The fine art paper has very minimal texture. What texture it does have is similar to cold-pressed watercolor paper. The linen-textured paper has a crisscross texture to it, somewhat like canvas but much more subtle. The fine art paper is a decent bit thicker than the linen-textured paper (300 gsm vs. 230 gsm), although both are considered heavyweight matte papers.
Our personal recommendation is the fine art paper for sketches and watercolors, and the linen-textured paper for art that was originally an oil painting. In the end, though, you can't really go wrong, as you won't notice much of a difference between the two paper types if you are standing any more than a few feet away.