Satin would be pretty but I think cotton is more durable and practical on a quilt that would be washed and used a lot. After cotton binding is finished, you have 4 thicknesses of material that add extra strength to the edges of a quilt. The edges of a quilt will generally fray faster than any other part of a quilt. For me, cotton would be easier to work with than satin. Just my opinion, not saying you couldn't go for elegance if you wanted to use satin. :wink: