I'm different. I go around the corner to Michael's Arts & Crafts store and pick up a large 11 oz. can of Krylon Matte Finish. The can advertises the the spray, "Eliminates Glossy Sheen, Creates a Soft, Satin Finish.
The can only costs a couple of $$, I get a lot, and it works as good as any other small, expensive, can labeled for modelers.