I use Hobbs Polydown batting and machine quilt it. My quilts are never really flat and all have a slightly puffy look. The quilts I make using Warm and Natural are much flatter and stiffer. The Polydown batting is not as thick as Hi-loft batting but I think it is puffy enough and is still easy to machine quilt or tie. It can be quilted 8'-10" apart and washes and machine dries very well. It's my batting of choice for any quilt that is going to get a lot of wash and wear.