Salvakalpa samadhi is like a sea of perfect light; nirvikalpa samadhi is no light, no darkness, no way to describe it. Absorption is complete, that's nirvana.
Salvakalpa samadhi is absorption in eternity to the point where there is no real concept of self but there's still a karmic chain. Nirvikalpa samadhi is absorption in nirvana; concepts of self and no-self go away completely.
Salvakalpa samadhi is a tremendous acceptance and liberation, but it is not complete absorption in nirvana, in that consciousness.
The light of the supra-conscious, of salvakalpa and nirvikalpa samadhi, is not connected to this world at all. It passes through this world but it is not part of this world, in a way of speaking.
Nirvikalpa samadhi is another matter. In order to enter into nirvikalpa samadhi, you must have a great deal of humility.
When I enter into nirvikalpa samadhi, most can see this light, or feel it. This light creates very powerful, steady spiritual transformation. The reason you are here is to sit in this light.
Nirvikalpa Samadhi means you are sitting in meditation and you go beyond the planes of light to nirvana. Then you come back and here you are "back in the saddle again".
Nirvikalpa samadhi or sahaja samadhi is all the way up. You get above the cloud line to the land of eternal snows and it's ecstasy beyond ecstasy.
When you eneter into samadhi and seek to make that magical walk between salvikalpa and nirvikalpa samadhi, it's necessary to focus your awareness not on being or nonbeing.
They reach the point where they feel, "I can go into samadhi now. I can do everything on my own," and that's exactly where they stay, in the lower samadhis. There are many, many people on this earth who can go into salvakalpa samadhi.
Eventually you will go into samadhi. Samadhi is a very advanced meditation. You dissolve into the clear light of eternity again and again.
The higher octave light that comes from samadhi, the kundalini of samadhi, this you can absorb continuously. You can never overload. It can never hurt you.
If you had to pick between one or the other, I can't say which one is better; but I would certainly say, in my orientation, the light of samadhi is all-pervasive. Samadhi will free you.
The final entrance into Nirvikalpa Samadhi, into nirvana, God-realization, when you become the absolutely best friend of God, can only come when your love is completely pure.
Nirvikalpa Samadhi means that you've gone off the board; you've gone off the map. There is no way to describe it. You have attained liberation and are no longer bound by the cycle of existence. You just are, and yet you're not, at the same time.
Not all teachers utilize both forms of light.In certain circles, those teachers who can manifest the light of samadhi but not the mystical light have put down the mystical light.
Samadhi is perfect absorption to the point where there is no sense of being absorbed, not the consciousness of knowing that you are having an experience.