The 598's have a really big soundstage, but not the best sound imaging. Sound imaging is what you're after if you want to accurately pin point an enemy in a video game. In that regard, i think the PC 360 would be your best choice for gaming, plus that design is semi-opened, right? Some of the best gaming headphones i've put on were always semi-open. I've never listened to the PC 360 though, oddly enough.