As stated in the Padma Purāṇa:

ārādhanānāṁ sarveṣāṁ viṣṇor ārādhanaṁ param tasmāt parataraṁ devi tadīyānāṁ samarcanam

“Of all types of worship, worship of Lord Viṣṇu is best, and better than the worship of Lord Viṣṇu is the worship of His devotee, the Vaiṣṇava.” There are many demigods worshiped by people who are attached to material desires ( kāmais tais tair hṛta jṣānāḥ prapadyante ’nya-devatāḥ ). Because people are embarrassed by so many material desires, they worship Lord Śiva, Lord Brahmā, the goddess Kālī, Durgā, Gaṇeśa and Sūrya to achieve different results. However, one can achieve all these results simultaneously just by worshiping Lord Viṣṇu. As stated elsewhere in the Bhāgavatam (4.31.14) :

yathā taror mūla-niṣecanena tṛpyanti tat-skandha-bhujopaśākhāḥ prāṇopahārāc ca yathendriyāṇāṁ tathaiva sarvārhaṇam acyutejyā

“Just by pouring water on the root of a tree, one nourishes its trunk and all of its branches, fruits and flowers, and just by supplying food to the stomach, one satisfies all the limbs of the body. Similarly, by worshiping Lord Viṣṇu one can satisfy everyone.” Kṛṣṇa consciousness is not a sectarian religious movement. Rather, it is meant for all-embracing welfare activities for the world. One can enter this movement without discrimination in terms of caste, creed, religion or nationality. If one is trained to worship the Supreme Personality of Godhead, Kṛṣṇa, who is the origin of viṣṇu-tattva, one can become fully satisfied and perfect in all respects.