I use both W&N and Hobbs 80/20. No probs at all. For a lightweight quilt, where I also want a light amount of quilting, I use high loft, fire retardant polyester. My quilting is just a hobby ... it really has no point to it except that I like to do it and it keeps me off the streets and out of the taverns. Nobody is standing in line to have one of my home made quilts. Therefore, as much as I would like some 100% wool batting or some other super good stuff, I can't justify the cost.