Those were the main differences that stood out. Upon discovering those differences (they're quite obvious) I honestly stopped listening to the Z1000 pretty quickly, aand I just packed it up and returned it within a couple of days.
Also, although my post comparing the Focal Spirit Classic vs. the 7520 was a bit elaborate, don't take it too seriously. I was cursing the whole time at how uncomfortable they were and was glad to take them off each time I had to put on the 7520 to compare :) Overall though, the FSC just didn't stand out to me, it wasn't special sounding or anything. Of all the headphones I've tried in the last two months, headphones that stood out to me in terms of sound are the Kef M500, B&W P7, Philips L2 and of course the 7520.
Edited by starfly - 11/28/13 at 10:15am