I like Warm and Natural but also like Hobbs 80/20 and Mountain Mist White Rose or Cream Rose ( these are 100 percent cotton).
If you like a flat quilt and preshrink your battings Warm and Natural is a great choice ( if you are ploy adverse) . Hobbs 80/20 I think has more fibers per square inch than Warm and Natural ( same size battings from both companies and the Hobbs weighs more) . The Mountain mist White or Cream Rose drapes the best of all of them it is 100 percent cotton as apposed to Warm and Natural that has a poly scrim. I recently used some and was very impressed it is so.. soft and quilts wonderfully.
If you like a big tolerance ( lots of distance between quilting) for quilting Warm and Natural has the largest at recommended 10 inches.
You may want to take a look
http://www.batt-mart.com/site/490194/page/96250