Experiences with Minted letterpress paper?

We just got the free samples from Minted and aren't super impressed. The digital printing seems a bit muddy. The letterpress printing is super crisp, but the sample only includes their "premium" cotton letterpress paper. It's very thick, oddly light (feels like foam board) and has a texture that we don't like the feeling of. Can anyone describe how the standard cotton letterpress paper compares? Thanks!