My favorite to work with is a 80 cotton/20poly that has been through a soak and the drier - do not agitate!!! Ask me how I know. I'm the rare person who is not a fan of the crinkled look, so I like to preshrink my batts. I haven't been quiltiing long enough to see how my quilts hold up. I have used Mountain Mist poly, Hobbs Polydown, and the cotton/poly. Today I will use a Fairfield Quiter's 80/20 bought on sale at JoAnn's. It's been preshunk and is ready for a trip to the church to sandwich it.