Wall Street Journal
We have been testing Sony's would-be iPod killer -- a sleek, slim, silvery, magnesium-clad gadget inelegantly called the "Network Walkman NW-HD1"...
Our verdict: While the new Sony is smaller than the iPod and has much better battery life, it is markedly inferior overall. It has a confusing, complex user interface that makes it hard to use; weak software for the PC; an oddball music format that makes loading it with songs tedious; and a companion music download service that offers less than Apple's. The iPod wins this round, and remains champion.
If you love the Sony name, or the Walkman's size and design, or if you regularly take flights lasting more than 12 hours, you might be willing to pay $100 more for this new Walkman over an iPod. But, for everybody else, until Sony fixes the multitude of sins in this product, steer clear of it.