I use wool very often for my quilts. It shrinks quite less than coton, so when a customer want a smoother look for his/her quilt, I use wool. I also use it for wall hanging as it gives a lighter quilt and a wonderful definition to the quilting design. I used a high quality polyester batting recently and found it bearded. I never had this issue with wool. My daughter's baby quilt was made with a wool batting. The quilt has been heavily used for 7 years, washed and dried every week, and is still beautiful.