I was right to see SIRAT without knowing much going in. It startled me several times; I actually jumped in my seat. It is a film about a rave, but there are also moments that do not get neatly paid off like ordinary foreshadowing, so it really lingers in your mind. It has a reputation as a masterpiece, and I get it, though I laughed afterward that I never want to watch it again. It was not quite Funny Games for me, but several of the most unpleasant scenes have stuck in my head, so I may not need to revisit it for a while. I saw it in a theater with great sound, and that gave me a slight headache. But without that sound, I do not think you get the full value of the film. While it is still in theaters, definitely try to catch it somewhere with a strong sound system.