The lengthy braided cable was slick, the in-line remote was a thoughtfultouch and the headband was amongst the most comfortable we've had the pleasure of coming into contact with at this price point.
Also, in contrast to the tiny clips on the Scribe receiver, the large clipboard-style clip on the ZPen is capable of gripping onto whole pads of paper and affixing it to a new piece of sheet starts a new page in the virtual pad, another thoughtfultouch.