Really hard to pick a favorite. The first listen, tracks: 3, 4, 5, 6 stood out. The music is packed full with so much data; it took my mind quite a while to grasp the scope of this album. Those tracks initially provided the highest dopamine release. After a couple listens, I became aware of the intricacies of the other songs, and was able to channel much dopamine with all the songs. This album is a sonic masterpiece. Unbelievably beautiful, rich in texture… it really blows my mind.
To sum it up in one sentence: I laughed, I cried, I came. 
About a year ago, I drove to New York, from Cincinnati (alone), with only Ineffable in the CD player. I listened to it for around 13 hours straight, and it just kept getting better and better. Music truly is the greatest drug. And listening to Shpongle is like an orgasm coupled with intravenous meth/heroin + shrooms all rolled into one.
So long (for now) and thanks for all the dopamine, Simon and Raj. Great times.