I am getting a new gaming headset and I am choosing between these four. I am going to be using them for PC gaming, so I am slightly leaning towards the Razer, because I know they work closely with PC. I have tried on both the Tiamat and the A40's and they have excellent sound quality and are very comfortable. But what about the Megalodon and the A50's? I have a $300 budget, so that's taken care of. If any of you have any of these, can you let me know how you like them so far?