One of the reasons I have been quiet is because some people have said the ED10 required at least 500 hours of burn-in to start singing. I received a demo pair with the new pads last Friday. Out of the box they clearly sounded better that the original pair I bought and sold (they had the wrong pads). Right now this demo pair has 120+ hours of burn-in. During the 20th to the 80th hour more or less they sounded horrible but now they are settling in and are a little bit better than just out of the box.
Do I think they are going to be at the top of the high end current production headphones? I think it is too early to tell but they really have to improve to beat my recabled HD800 and my recabled T1 with my WA5-LE or specially my HE-6/Pass Aleph 3 combo.
Time will tell I and will report my opinion.