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.
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.
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.
Light, thin, and ready for just about anything the business world can throw at it, HP's iPaq rx1950 is a strong performer but falls short with lack of Bluetooth and low memory.
There isn't too much the PalmOne LifeDrive can't do with its integrated hard drive, its wireless connectivity, and its multimedia capabilities, but it's way too expensive.