The ayahuasca experience lasts 3-4 hours but isnt nearly as strong. The DMT experience is 15 min and shoots you into hyperspace...Thats the one I want.
Mine lasted about 30-45 mins but it felt like a week.
It's fucking crazy, one minute you are in another dimension and then you wake up from it and you are like what the fuck just happen. I cannot even put it into words how i felt and what i saw, but it was not of this earth for sure. I wanted to do it again but my friend said you should only use it once a month or so.
I think the band Tool were big users of DMT based on their songs and music videos.