I use it for landscape quilts and small projects made with snips of fabric for eg where I want a temporary fix while I FMQ over it. I don't like the feel of it though and wouldn't use it in a quilt-to-be-used. I've only recently started using spray baste on smaller projects, not tried it on a big quilt yet - I safety pin and re-adjust as I work out. No matter how well you smooth and flatten, it will need working out as you quilt. I don't know if I'll ever spray baste a large quilt - pins work for me so why change?