I don't like to use poly or poly blend fabric for several reasons.
1. I don't like the feel of it against my skin - even in my clothes I much prefer cotton.
2. It is difficult to get a good crease when pressing
3. The polys and poly blends end up "glazing" with too much heat from the iron.
4. I like the vaster selection of prints and colors I get with cotton
5. I prefer working with the better "behaved" cotton and like the feel of cotton next to my skin.
I do, however, absolutely LOVE to quilt with polyester threads. I prefer poly threads over cotton, especially in the LA. I prefer them for the following reasons:
1. The high speeds at which a LA operates produces a lot of lint in cotton threads. Inevitably that lint will end up getting caught in my bobbin spring and messing up my tension. I do not have this problem with poly threads.
2. I love the variety of weights and looks I can get from poly threads
When it comes to batting I like all. Poly, poly cotton blend, all cotton, wool , silk blends and bamboo. All depends on the application.