I'm not a prolific quilter, so don't use as much batting as some people. I have used warm and natural 80/20 and liked it. I bought a roll of Pellon when Walmart was closing down their "fabric cut so size" departments in our area. It's thinner than Warm and Natural. I would guess it's about 1/2 the thickness of warm and natural. I'm doing mostly community service quilting right now. It works fine for that purpose, plus I've done a couple of my own in Pellon batting. It worked well for that, too.
bkay