Urban Decay Delusional is a warm purple with a sparkle finish that is permanent and retails for $18.00. 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 80% similar — it is more shimmery, lighter, brighter, glossier.