Hi, The only thing I know about wool batting is that it is expensive. Years ago some of the girls in my guild started using it. They are also the qult "snobs" in the group. They liked working with it but the price is rather steep. Silk batting is also wonderful but really, really, expensive. If you are making that heirloom Baltimore Alblum Quilt it might be worth the expense. I like the new Bambo batting but only purchase it with a 40% or more off coupon. I also save it for my special projects. I always consider who will be using the quilt and how much they know about caring for one.