I used to use Warm and Natural, but eventually found the drape stiff compared to other battngs. Currently use primarily Hobbs 80/20 or Mountain Mist Blue Ribbon cotton (a very traditional batting), depending on what I am making. There are *huge* differences in quilt batting. Different types are better for different applications. Choice of batting depends a lot on what you are making and the look you are going for. I personally have never tried to mix two different battings in a single quilt. Not only are shrinkage rates different, but drape and handling vary, plus the look of the quilting when finished.