My favorites are silk and wool. However, It has to be a really special quilt for me to splurge for those batts and I really look for special prices. However, for most quilts I use Hobbs 80/20 which I usually get at Hobby Lobby for 40% off. One significant advantage for using the same batting all the time allows me to join pieces when I need a slightly larger size. By so doing I am assured that when washed all areas will shrink uniformly. If you join different batting pieces or even different brands the shrinkage pattern will be obvious on the front. When I store my batting scraps I always make a straight cut on one edge-intended for joining- and measure the piece BEFORE FOLDING AND STORING. I am surprised at how many of my scraps I am able to use. After all, you pay the same amount per square inch for the batting scraps as you do for the part you use in your quilt.