In the olden days when I could hand quilt I used Fairfield 80/20. It's like quilting through air. But then my cat decided is was better than salmon, which eventually ended up with a trip to the vet for x-rays--no batting inside her but a good 6" had been licked off my quilt. Then the other cat to the vet...she was clean too... (Lord only knows...). So that was the end of that.
I switched to Hobbs Heirloom, did one Hobbs black, which was hard to quilt through, and my other cat adored and pulled tufts up (like bearding) through the top.
Now I have to have everything to the LA'er and I use Warm and Natural or Warm and White. It is a little stiff. But Joann always has it 50% off or on a coupon and then 20% on the other coupon, and you can buy it off the bolt or in a package. Every penny counts when you're trying to live on Soc Sec. And Warm is a local company.