RE: KG Jag: "
Biggest issue for some may be sending the headphone by USPS in only the Senn retail box inside a shipping bag. "
I think expectations may differ on this.
I very was pleasantly surprised that they upgraded me to Priority Mail shipping and that I received my set on the 2nd day in Denver (from Florida I think) for just the standard $5 ship charge. (They did get the postage right on mine, that would have pissed me off). I ordered on the 6th and got them the 8th. I am still waiting on a phone I bought from buydig on the 3rd to arrive (frigging smartpost!!)
I also think that the Sennheiser retail box on this model looks to be designed to withstand very major shipping trauma.
I ship headphones UPS/USPS all the time, and am pretty sure you could just put a stamp on the Senn box it and the headphones and accessories, packed in a hard case, in thick foam, and then the retail box, would arrive safe nearly all the time.
That said, the box will get a few more dings than it would inside another box, but when buying used phones, a pristine retail box is not to be expected. I ship my stuff in boxes, but the fact that adgtron did not did not bother me at all , compared to how pleased I got when they upgraded me and it arrived in 2 days rather than the expected 7-8.