I had bearding with one of the QD battings, now you mention it! I had a chat to them, and they reckoned it was because I was using black backing and had the quilt over a heated blanket. The dyes used in dark fabrics make them more prone to bearding, and then there was all the static electricity from having it on top of an acrylic blanket, moving about separately so there was friction. I put a cheap cotton bedspread in between them, and the bearding stopped. I've avoided using really dark backing fabrics since then. It was the QD cotton select, but I don't think the batting was the main problem there. It didn't beard on the top, after all, and I used the backing fabric as sashing there.