I have heard Dream (Request weight, I think) is great for hand quilting.
I mostly machine quilt, and my favorite batting is Mountain Mist Blue Ribbon 100% cotton batting. This batting gets softer and softer over the years, until finally it feels like you are hugging a cloud. It also drapes beautifully and gives the soft, crinkled look that antique quilts have.
I have also used Hobbs Heirloom 80/20 and liked it. It has a little more loft than the MM Blue Ribbon and does not crinkle as much, for those who like a more modern look.