The Universal full-DE blade shavette is magically smooth.First shave with my new Universal Shavette tonight.
Loaded up with a Polsilver SI half blade (was a bit tight with a full blade).
Don't worry about the tightness with a full blade. Since the retaining piece is a U, if they made it wider to be snug all the way down with a full blade, a half blade would be loose. You don't need to push the U so it's all the way in - once it binds, the blade is plenty snug.