The Zune HD represents a big step forward in Microsoft's war against the iPod, but when it comes to accessories, there's just no catching up to Apple. Step inside any local electronics store and you'll find yourself wading through a swamp of speaker docks, cases, cables, chargers, in-car FM transmitters, and alarm clocks, all made for the iPod. Try looking for the Zune section, though, and you'll be sorely disappointed.
Fortunately, the handful of accessories made for the Zune are all surprisingly high in quality. The iHome ZN9 alarm clock, for instance, is one of the better bedside speaker systems we've tested, regardless of what MP3 player you plug into it. Same goes for the Kicker ZK500--the thing is a first-rate, floor-shaking speaker dock that any Zune owner should count themselves lucky to have.
Some accessories are uniquely Zune, though. The HD AV dock, for example, has no equal in the iPod world. With it, you can output 720p video from your Zune HD to your TV, as well as show off your music collection, flip through photos, and tune in to HD Radio channels.