I only use wool batting. There is a big difference between wool and the others. Wool is thicker, but puffier. It definately keeps you warmer by a long shot. I wash mine in the washer and then just toss it in the dryer on normal heat. They all look great. Didn't shrink at all. I won't use anything buy the wool batting unless it's a wall hanging or table runner...then I use cotton batting.