I am not positive about this but I think Hobbs 80/20 can be found in black. That is the batting I have used the most (cream colored). I like it, but haven't compared it to much else. I have bought Hobbs wool and am anxious to try it. I also want to try Tuscany silk, I will choose to use it in a special quilt because of the price. I can't help with the question concerning muslin, I have only used it occasionally. If I were to buy some now, I would go with a brand I trust, like Moda, or other well known fabric company's.