I use Hobbs Poly down alot. The customers like the finished look of it and I really like how it quilts. It is a good quality polyestor and it is not expensive. A couple weeks ago a customer provided a fairfield polyestor batting wth her quilt top and I had troubles with it because, like someone else said, it is uneven and thin. I hated working with it. She wanted a very light low loft finished look to her quilt and that is definitely what she got!. I have also used Quilter's Dream polyestor and liked it and last week I used a Quilter's Dream Puff ( a higher loft) and it quilted beautifully.