Iv experience DMT many times over the years, different settings and doses. The experience is extremely different each time. Id say this....My most extreme experience, perfect dose and setting, propelled me into a state I had never been in the previous 15 or so time I had tried earlier in life. I was all that is, was, and ever could be... I was god...and it was the most horrible lonely feeling ever. It was like I knew this feeling before, almost like a mad man who after he believes he has found the doorway out of his twilight-light zone, is throw back in. I fought for any sort of existence again. I didnt care weather I came back as myself or to earth at all, I just wanted to exist in a story or reality of any sort. Anything but being god. I took away from that experience that  it is possible the whole universe and all matter inside of it, including not physical entity's like ideas and language are all one entity trying to fool itself. Living amongst its own reflections, loving itself, and knowing anything other than "one".

Jason