Warm and Natural is a little more stretchy too - I like it best for hand quilting. I generally use Warm and White for machine quilting, it's got a bit more body and stiffness but not in a way that makes your quilt stiff or anything. You just have to feel it I guess to understand! My favorite for machine quilting is Hobbs 80/20 but it's pricey so I buy it on sale or use the Warm and White.