Create your own collection of batting samples from leftover bits as you try new types of batting. When you baste a quilt keep a square of the unused batting from the edge. Once the quilt is quilted and you’re ready to square up and trim before binding, try to keep a good sized strip of the quilted batting with the top and backing attached, perhaps from the edge of the border, so you’ll know what the batting feels like in a quilt. Make notes about each type, what you liked or didn’t like, how it performed, which fabrics it works well with, which quilts it was used in, etc. As you create more quilts and try out different types of batting, you’ll be ready to go to batt with a customized ready reference at your fingertips.