Totally undeserved! ZuneHD got such high functionallity and quality standards, that I think it still can beat any other portable media player to death, and spit in its carcass, just by putting them side by side. It was the pionneer of the metro style UI after all.
Saddly it never got the cool factor among common users, perhaps the old "too late" thing has something to do there.
@Jim Young: It is not always suitable to replace an ZuneHD with a mango phone, just because the battery life, or you plan to hace 2 phones?