I have used only the 108" muslin. I found it an acceptable backing for charity quilts and the scraps are good for piecing.. I always look for their "best" quality muslin and then wait for their 50% off coupon to appear and buy a bolt. I have not used their other 108" fabrics. My choice for backing often is to go to a local quilt shop and shop their bargain room. In the last 6 months, I have found fabric for $4 a yard that is excellent quality and I can do a pieced back for less cost than any 108" that I can find.