The things I have read suggest French Fuse, which is really light weight with some small amount of stretch. I have not done an entire quilt yet, but have made a few tote bags and it worked great. My LQS machine quilts T-shirt quilts and they are great. I have seen ones that are all regular, same size blocks and ones that are more random. I love both. You can get the French Fuse with a coupon at JoAnns or Hancock....