I bought a roll of the Hobbs 80/20 recently. I'm happy with it. It's a little thicker than what I was used to, but my HQ16 machine did just fine. I do cut the size I need from the roll and then run it through a spin cycle and a dry cycle to pre-shrink because it says it shrinks up to 5% - which is a lot.
I did quilt one quilt without prewash/dry before I made the decision to prewash. I didn't particularly like how the quilt looked after washing. Someone else might love how it looks.