I agree. The first one scared the crap out of me and the girl I was watching it with. I was almost chocked how scared I was It goes downhill from that exactly as you said.
I'm not the slightest into "higher experiences" as you call it. I have never felt this spiritual mumbo jumbo alot of people talks about while listening to goa/psy. I just think it's bloody good music. Nothing more, nothing less.