Mark Broom was the best of the three acts, but had his own issues.
Cube (you have to find the right Cube, there are so many artists with this name) was OK. This was basically ambient music and I got a bit into it after a while. Broom was more typically techno-ish. Some of it was pretty good, but his set was marred by the light show. The strobes went hard and directly in our eyes at totally random intervals, such that looking at the stage was punishment. It really hurt our enjoyment of his set, was a huge distraction. (Strobe lights don't bother me, when they're not directly in my face.)
So Cube was normal lighting, and neither Broom not Autechre wanted to be seen. Broom would blind you if you tried to watch, Autechre was just dark (though early in their set the lights came on for about four seconds, everyone looked confused, then they went back off for good (or at least until a little over halfway through when we left)).
