I've heard plenty of good reviews about the Logitech G733 Lightspeed, and I think they would also fit just within the allocated budget. It has a great mic which is detachable in case you don't want to use the headphones with it, and prefer a cleaner look. It also has amazing directionality when it comes to the sound, and having used the headphones a few times, I can say that it becomes much easier to distinguish the direction from which footsteps are coming from in games like CS2.