I have used Hobbs 80/20 black and love the weight of it. It's about the same weight as W&N or a little bit lighter. I don't find that it makes a difference in a darkly pieced quilt, unless the fabric in the quilt is a loose weave and the batting might show through. I don't have any fabric in my stash that is loosely woven, so it doesn't matter with my quilts. Most times I forget and just use W&N anyway. Since I buy it at Jo-Ann's with a 50% off coupon, it is a lot more economical to use.