Warm and Natural is a cotton batting needlepunched through scrim. It is harder to hand needle because of the scrim.
Hobbs 80/20 is good if you like some loft. Quilters Dream is good if you like a flatter look. The two absolute best types of batting for hand quilting are wool and silk. Hobbs wool is excellent. It is like quilting through butter, it is that easy, and the hand stitches have great definition. Many hand quilters use wool batting. Silk is also very easy to quilt, and it has the advantage of being very soft, but it is pricey and does not give the stitches as much definition as wool.