I just want to chime in here, and share my experiece and feedback.
I'm only 19, but I have some pretty severe neck problems.. I can't handle the weight of the LCD-X for more than 10 minutes. But, I loved them. I would spend hours almost every night laying in bed staying up late so I could have that "private studio" that were my headphones. And what fun it was being in that studio, hearing -and more importantly- feeling the music.
I recently traded my LCD-X for an HD800. Sound was of course, not the motivation for such treason. After all, the LCD-X was the best thing I'd ever heard, and the most enjoyable music experience I'd ever had. Period.
I traded them for comfort. I was convinced it would be better to listen to an HD800 for 3-4 times as much because I could handle the weight, rather than the LCD-X even though it was the better headphone for me. I was under the impression the HD800 would be far more comfortable, and sure enough, it was.
But here I am, second day of owning an HD800, and I'm missing my LCD-X terribly. I even bought an HD650 which arrived today, to give me more of a similar signature to the LCD-X. It's almost like having a picture of your girlfriend, rather than being with her.. Painful.
Not to be so gloomy, the HD650 is a very remarkable headphone for the money, and it's 260 gram weight is so far helped a lot. I just wanted to express my desire for a 300 gram or less(now I'm really dreaming) Audeze headphone. That's probably a completely unrealistic dream, but hey.. A guy can dream. Maybe the Z or the 4 or whatever it will be, can be that dream.
Sennheiser is great.. But I'd like to own an Audeze once again. I need my girl back, you know what I'm saying? Audeze, hear me out... because I'm lonely.
Park