This morning I happened upon this very interesting conversation between Srila Prabhupada and a guest, while I was visiting the Sampradaya Sun. We are reprinting the entire conversation as it was published in the Back to Godhead Magazine.
Kundalini, Reincarnation, the Astral World, and More
by His Divine Grace A.C. Bhaktivedanta Swami Prabhupada
excerpted from Back to Godhead Magazine 1983 Volume 18 No. 9
Questions and Answers On the Science of Transcendence
This conversation with guests took place at the Hare Krsna center in Los Angeles in the late sixties.
Guest: What is the outcome of the continual chanting of om?
Srila Prabhupada: Like the Hare Krsna mantra, om is a manifestation of the Supreme Lord in the form of sound vibration. That is stated in the Bhagavad-gita. So, Hare Krsna and om have practically the same value, but chanting Hare Krsna is easier. Another reason we chant Hare Krsna is that it was specifically chanted by Lord Caitanya. * [“Lord Caitanya is Krsna Himself in the role of His own devotee. He appeared in Bengal, India, five hundred years ago to teach love of God through the chanting of the Hare Krsna mantra.]
Om is generally chanted at the beginning of Vedic mantras: om tad visnoh paramam padam sada. . . . om purnam adah purnam idam. Om addresses the Lord, and Hare Krsna also addresses the Lord. But chanting Hare Krsna is easier, and it is recommended for this age. Otherwise, transcendentally, or spiritually, there is no difference.
Guest: What do you think of kundalini-yoga and raja-yoga?
Srila Prabhupada: Raja-yoga means “the king of yogas.” But we are practicing the emperor of yogas, bhakti-yoga, so raja-yoga is included in it. In the Bhagavad-gita [6.47], Lord Krsna says,
yoginam api sarvesam
mad-gatenantar-atmana
sraddhavan bhajate yo mam
sa me yuktatamo matah
“Anyone who is always thinking of Me within himself is the topmost yogi.”
Therefore a person who is in full Krsna consciousness has surpassed all other kinds of yogic principles”.
The Hare Krishna Movement 