Hi, I have used fleese but it is necessary to pin it in many more places than you do batting. I am not crazy about using it. I have used an old blanket and it is easier to work with. I also just machine quilt. Knowing if something will pill is a hard question to answer. I am not sure what parameters you have to have in fabric for it not to pill, and I don't know if the anti pill stuff really works. It would be interesting to find out what brand fabrics work.