The I use Hobbs 80/20 fusible batt most of the time for machine quilting. It does fluff up a little after washing. I find cotton batting in general is easier to sandwich and machine quilt than polyester. There are some nice polyester batts on the market now and I still occasionally use one for a fluffy quilt. I find polyester more difficult to machine quilt without getting puckers on the back. Machine quilting on a domestic machine is easier with either fusible batt or 505 spray basting. That is just my opinion of course.