I think what type of marking works for you really depends upon how you are quilting. hand quilting, long arm and domestic home machine...all have different requirements IMO.
The can of miracle chalk is awesome for domestic machine quilting, in my experience. It's just that you have to rinse off the stencil between sections. I usually do an entire side of a quilt (border) or maybe several blocks at a time. Maybe a continuous line across one row of the quilt. never the entire thing.
If the chalk disappears with steam, just the heat of your hands and a little perspiration will take it off, but that is not happening when you have the quilt in your machine bed.
You have to experiment to see what works for you.