I use both the Poly - I buy the thin type I get from Hancock of paduca and it is soft and drapes beautiful and get my 20/80 warm and natural from joannes - I enjoy them both - the difference is that cotton breathes and poly keeps body heat in ... I use poly for quilts that I use in the winter when guest come and we turn down the heat in the house (at night) so they won't get cold. I have a scappy quilt on my bed with poly and it is the only blanket I use because I get too warm with more than one blanket on me at night. But I think every one should use what they like.