Judy aka knittykitty actuall brought me warm and natural 80/20.
I like the non loftier batting but I have used it on that's that they wanted lots of puffiness in so it works too.
I use Bamboo , warm and natural wool, and whatever feels "right" to me.
It's all good.
Judy saw her quilt on FB that I posted and I think she like it. lol.