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Web browser
Compared with the browsers we've seen on similar products, such as the Sony X-Series Walkman or Archos 5 (Opera), the Zune HD is miles ahead of the pack
but pitted head-to-head with the iPhone's Safari browser, the Zune HD falls short
battery life is rated longer than the iPod Touch
brilliant OLED display
Microsoft was gracious enough to reintroduce the handful of EQ presets found only in the first-generation Zune, but without more advanced settings for sonic sculpting
In side-by-side comparisons with the third-generation iPod Touch heard over a pair of Ultrasone HFI-2200 and a pair of Shure SE310 in-ear headphones, it was difficult to discern any sonic characteristics one device had over the other--except to say that the iPod's headphone amp offered a few more clicks of headroom over the maximum volume output of the Zune HD
Its multitouch keyboard is more accurate and responsive than those on many touch-screen mobile phones we've tested.
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from
http://reviews.cnet.com/mp3-players/zune-hd-16gb-black/4505-6490_7-33750785.html