Hi folks, I've had a pair of AKG 702's for some time now but because of the headband, which I've found uncomfortable and causes headaches, I've stopped using them. I wasn't bowled over by the sound either although I'm not sure if my Asus Essence STX II is driving them adequately. So I'm moving on and looking at other options. I've tried something similar to the Sennheiser design and find these more comfortable. So I'm wondering how you guys go about choosing headphones that are right for you? Is it a case of ordering and returning until you get it right (If you are unable to visit somewhere for a demo)? Should I get something to drive them first if my soundcard is inadequate and then try the headphones? I'd want to spend about £400 on a setup that would be good for music but primarily for immersive gaming. Current options I've looked at would be some HD600/650's and something to drive them or the GSX1000 + HD599 which looked a good allrounder combo (although I have my heart set on trying some 650's for some reason). Please help!