Makeup Geek Acoustic is a warm burgundy with a pearl finish that is permanent and retails for $15.00. In comparison, Obsessive Compulsive Cosmetics Black Metal Dahlia is a cool burgundy with a metallic finish that is discontinued and retails for $18.00.
Obsessive Compulsive Cosmetics Black Metal Dahlia is 95% similar — it is more shimmery, lighter.