I use Quilter's Dream Poly Batting for my best quilts. It is light weight and quilts up wonderfully whether by hand or machine. It is good to use for places that need a light breathable quilt, like South Florida. For my family in the north I use Jo Ann's polyester because they like the puffy warm effect. For them I use a medium loft. Finding what is right for you and those you love requires testing and what you can afford.