To rebelinho: Yea, def read that whole guide (so helpful!) plus heaps of the comments especially regarding these headphones. Thanks heaps for the response.
To TheEndGame: I don't think I have a large head so I'm hoping I should be able to wear the hi2050 without getting a headache and you can get velour replacement ear pads for the 668B on ebay so that's not an issue. I'm not really sure whish headband style I'll like better but I guess the 668B is the safer option in case I really do have a big head haha. But from what I can understand from your post though, is that you prefer the sound of the 668B for fps gaming?
To PurpleAngel: Thanks for that insight, I didn't realize it had that much driving power. Awesome!
But yep that is the next question, which is better for fps gaming? I am assuming the SR850 isn't it cos it's been mostly ignored and so if I replace the ear pads with veluer and remove the sticker on the grill of the 668B, will the positional accuracy be better than that of the hi2050?
Cheers for the help!