Some of the glitter fabrics are downright scratchy. I'm leery of metallics bc of one that changed to an ugly brown after washing. That was a long time ago, maybe they have improved? Well, actually, they must have, or wouldn't still be around.
I do like the pearlized fabrics, like MM Fairy Frost and some of the swiss dots. Just a bit of shimmer. Also not sure how those will stand up over time.