Shiva Purana
उत्तमं रुद्रदैवत्यं मध्यमं विष्णुदैवतम् ॥ अधमं ब्रह्मदैवत्यमित्याहुरनुपूर्वशः ॥ २५ ॥
The Japa with Rudra as the presiding deity is the most excellent, that with Viṣṇu as the presiding deity is the middling and that with Brahmā as the presiding deity is of the lowest quality.
english translation
uttamaM rudradaivatyaM madhyamaM viSNudaivatam ॥ adhamaM brahmadaivatyamityAhuranupUrvazaH ॥ 25 ॥
hk transliteration by Sanscript