I hear a lot of Enter Shikari talk but I've never given them a shot. RIYL?
They are very hard to define, because when you say they're a fusion of electronic and hardcore that makes them sound really shitty, like Attack Attack or something, and they're certainly better than that. I'd say their closest analog is Maximum the Hormone, in terms of their ability to fuse genres and chaotically jump through them. Try some songs like Ssssnakepit and Solidarity.