I've been scouting artists who mainly produce 155-180+ tracks, and I can tell you it get's really hard to listen to for more than an hour or two.
I get to the point where my brain screams NO MORE!, then I have to listen to something like goa or even psybient to get my mind back in order.
When I first heard some of the stuff at 165+ I went, what the phuk is that? but it has grown on me in a serious way. My big successes spinning some of the higher bpm sets have been when I started at the 145-150 range, then worked another set from 150-170, then finished with a short set(30-45mins max) of some of the extreme 180+ stuff.
I have to play some of the really brain melting stuff because I am getting a crossover from the industrial and hardcore electro/indust crowd who are now coming out for some of the parties.
In my experience you have to bring everyone down in the morning with a nice and light 145-148 bpm set to let everyone process and absorb the brain trip they just went on. Not many are really dancing during the higher bpm sets, but they pogo and bounce around like mad machines.
I actually had a mosh pit break out the first time I played Morthor Spede and Kemic-Al's Dark Journal for a crowd of vampire freaks. They went stark nuts and started moshing and circle pitting, and me and my crew were just staring in shock.
Uh, I went to a rave, and a mosh pit broke out! heheheh
It's definitely a sub-genre or new niche that is rapidly growing and developing in the US and worldwide, or at least it will if I have my say in it.
I have coined the term industrial dark psycore, and I know it's not really that original a term, but it is what the kids around here have started calling it in blogs and chats. It is taking me some getting used to, but there is a huge crowd that would listen to this if they get exposed.
I love the forest style stuff for my real psychedelic experiences, but for getting a crowd to show up, I now play some crossover stuff to draw 'em in and then slaughter 'em. I have a lot of kids who are now listening to dark psy, when at first they would sneer and call me a fairy winged pansy for DJing "trance" and "dance" music.
After a night of the really hard stuff, I find that I have some very strange mental trips and stuff going on. I really don't have a taste for it all the time, but once or twice a week is perfect.
If it brings some people in to the scene and helps us to grow and get new ideas, I don't see anything wrong with it. Just as long as we don't loose the psychedelic feel and the mind expansion and vibes.
And yeah, some of the really hard stuff does not fit the psychedlic tag or even resemble it. I really don't know what to think of it when I don't get the same type of mind feel as I get from the dark psy.
Black Magik will be working on some albums combining that great EBM sounds and style of bands like Front 242 and Das Ich with dark and twisted psy. It's all an experiment, so who knows what's coming out on the other side.