NARS La Paz is a cool berry with a frost finish that is limited edition and retails for $28.00. In comparison, Obsessive Compulsive Cosmetics Strange & Unusual is a warm purple with a metallic finish that is discontinued and retails for $17.00.
Obsessive Compulsive Cosmetics Strange & Unusual is 85% similar — it is more shimmery, darker, more muted, glossier.