I've never been a fan of the wilflex super opaque inks. They are nooooooooooo where near as opaque as Union Max Opaque. Union Max opaque is way nice to print with, add a little curable reducer, or something I've recently tried that TOTALLY WORKS, Union Flow additive, "Thanks Pierre"!!, and you can even print with these wet on wet, spot, or even use them in sim runs. The wilflex supers are way to expensive, and not very opaque compared to the Union Maxo. I do use the Wilflex MX mixing system and even find making a custom mix over one of these Supers, not only less expensive, but better opacity!