Regarding comfort, I want to quote someone who has a lot of experience with the LCD range of headphones:
"I discovered a while back that it is possible to reduce the clamping force by bending the headband outward. The trick is that the headband gives most easily near the ear cups. If you grasp it in the middle and then on one ear cup, you can bend out that side. If on the other hand you grasp each ear cup and bend, it is very resilient and won't loosen up. You need to concentrate the bend on the portion of the headband right next to the ear cup. Be careful because the loosening is irreversible. I loosened my LCD-2 a little too much and now I can't get it tighter even when bending in the other direction. But you can carefully, gradually make it looser."
I tried this (after getting frustrated with comfort issues on my big head) and amazingly it did the trick, very comfy now. I also recently ordered the leather strap thing from Lohb which will hopefully alleviate headband hotspots and weight issues.
http://www.head-fi.org/t/754938/planar-pad-for-audeze-hifiman-fostex-t50-rp-modders
This advice should be a stickied somewhere because I see so many giving up on Audeze headphones because of comfort. Listening to my knowledgeable friend or reading tips within this thread have definitely increased my enjoyment with these wonderful headphones, and that I'm grateful for.