I use the Hobbs 80/20 pretty often and like it. It gets much softer after mutiple washings.
The fusible is a waste of time if you ask me. I used it on a baby quilt and still had to pin-baste because it wouldn't stay fused. And the whole reason I used it was to save time and not have to pin-baste. Plus, it seemed much stiffer than the other kind, even after a washing.