The best batting ? Quilters Dream is now probably the best batting. But they have a large selection. They offer three different thickness in each type of batting. They make cotton, poly, wool, dream angel, (a fire proof batting). The easiest, would depending on what you are doing and the out come you want. You can choose bonded batting or needled batting also called needled punched. Most all cotton batting is needled. Most polyester, but not all, is bonded. Needled or boned is the different methods of putting the fibers into a batting. See
www.batt-mart.com for a wide selection.