Sony Mylo 2 (white)
The Sony Mylo Communicator 2 is a huge improvement over its predecessor, but the Wi-Fi handheld will have a hard time competing with the similarly priced and better featured iPhones, Sidekicks, and Helio Oceans of the cellular world.

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Sony Mylo 2 (black)
The Sony Mylo Communicator 2 is a huge improvement over its predecessor, but the Wi-Fi handheld will have a hard time competing with the similarly priced and better featured iPhones, Sidekicks, and Helio Oceans of the cellular world.

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Nokia N810 Internet Tablet
Though not necessarily worth the price for an upgrade, the Nokia N810 Internet Tablet brings some nice additions to the mobile Web browsing device, including a full QWERTY keyboard and integrated GPS.

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Mio DigiWalker P550
On paper, the Mio DigiWalker P550 looks to be an attractive gadget for the mobile professional, combining the capabilities of a PDA and GPS into one device. However, its poor battery life and subpar navigation skills tell a different story.

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Nokia N800 Internet Tablet
Though it won't appeal to the masses quite yet, the Nokia N800 Internet Tablet is a nice, portable device for on-the-go Web browsing, and it has some worthy upgrades.

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Mio DigiWalker H610
Though not ideal for the car, the ultraportable Mio H610 is an accurate navigator and a decent multimedia player for use on foot.

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Pharos Drive GPS 140
Though the Pharos Drive GPS 140 has an accurate receiver and good Bluetooth integration, it will require patience on your part as it suffers from somewhat sluggish performance and an unintuitive interface.

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HP iPaq rx5900 Travel Companion
The HP iPaq rx5900 Travel Companion delivers a sleek all-in-one navigation, productivity, and entertainment device to mobile professionals; we just wish it had better battery life.

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Sony Mylo (black)
The Sony Mylo offers nice messaging and multimedia features for students, but we're not sure that's enough.

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Garmin iQue 3000
The Palm-based Garmin iQue 3000 is a competent organizer and navigator, but it's marred by mediocre performance and lacks some features that put it behind the competition.

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Pharos Traveler GPS 525
Maps and personal data go hand in hand with the Pharos Traveler GPS 525, a PDA that effectively combines organization with navigation to not only find where you are but also point you where to go.

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Asus MyPal A636
The Asus MyPal A636 is a PDA with a built-in GPS receiver that puts maps and directions on an equal footing with appointments and e-mail. While it delivers accurate directions and long battery life, it's a bit sluggish.

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