Illamasqua ESP is a cool purple with a matte finish that is permanent and retails for $24.00. In comparison, Obsessive Compulsive Cosmetics Belladonna is a cool purple with a cream finish that is discontinued and retails for $18.00.
Obsessive Compulsive Cosmetics Belladonna is 85% similar — it is less shimmery, brighter, more pigmented, better quality.