Re fickennein's comment in review about the attached cable--forgot to mention this before. I found the cable on my new JVC HA-SZ1000-E's to be barely long enough for comfortable use on the desktop. The quality is above average, which is nice, but the length just isn't quite enough.
For long-term comfort, to avoid pulling a HP amp onto the floor (inevitable w/a 1.2M fixed cord), I plan to check out a detachable cable mod for these headphones once they've burn in, assuming they sound good enough to justify the extra cost. I'm not handy w/a soldering iron & don't know how to do that, but there's a company that can help. Pretty sure this came from someone earlier in this thread (sorry can't recall who) - BTG Audio:
http://btg-audio.com/webstore.htm#ecwid:category=2609209&mode=product&product=11484987
Won't know 'til I verify with the owner whether the JVC can be modified in this way. But just looking at this metal frame (the JVC is very sturdy, large, well-built), I'm pretty sure there's enough space outside & inside the frame to accommodate a 3.5mm port. It's a cost, obviously, but if the headphones sound as good as I hope they do--and I mean above & beyond that crazy-good bass--it'll be worth it.
I get very good quality, inexpensive headphone cables from Ghent Audio. Have 3 of them, two x 2M + one x 3M. Sturdy/heavy cables that sound quite good. Not for mobile use, but for the home, really good. A 2M cable w/3.5mm jack on one end, 6.5mm jack on the other costs $14, shipped (can't beat that).
http://www.ghentaudio.com/part/d08.html