wool is very lightweight, but loftier than cottons, and a dream to stitch through.
mountain mist cotton is made for hand quilting- as is hobbs heirloom select.
batts with scrim (like warm & natural are made for machine quilting- and are more difficult to hand quilt (because of the scrim)
any batt that says quilt 2"-4" apart is ideal (they do not have the scrims)the Dream batts are all pretty nice to hand quilt... i love the bamboo and the dream orient (which is a bamboo-silk blend) but wool is my favorite- lofty but light!