According to Suta, all the Puranas are nothing but the mediums through which Sri Hari manifests himself---Brahma Purana is said to be the forhead of Sri Hari, Padma Purana is said to be the heart of Sri Hari, Vishnu Purana is said to be the right arm of Sri Hari, Shiva Purana is said to be the left arm of Sri Hari, Srimad Bhagawat is said to be his thigh, Narada Purana is said to be his navel, Markendeya Purana is said to be his right-foot, Agni Purana is said to be his left foot, Bhavish Purana is said to be his right-knee, Brahma Vaivrata Purana is said to be his left-knee, Linga Purana is said to be his right ankle, Varaha Purana is said to be his left ankle, Skanda Purana is said to be the hair on the body of Sri Hari, Vamana Purana is said to be his skin, Kurma Purana is said to be his back, Matsya Purana is said to be his stomach, Garuda Purana is said to be his bone-marrow, and Brahmanda Purana is said to be his bone.

So, all the Puranas being manifestation of different parts of Sri Hari's body are very sacred and capable of bestowing salvation.