I use a mid loft poly batting for most of mine although the ones I am doing now am using a low loft 80/20. I like the puffiness that the higher loft gives, and shows off the quilting better, in my opinion. But then I have just recently started machine quilting, and the low loft makes the binding process so much easier. If you are giving it as a gift, or for your own child use what you want. If donating to charity use the low loft.