$400 - 500 PDAs

The Bottom Line: 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.

Specs: Linux, 128 MB, Texas Instruments 400 MHzOMAP2420, IEEE 802.11b, IEEE 802.11g, Bluetooth 2.0 EDR, 5 in x 0.6 in x 2.8 in, Stylus, Keyboard, Touch-screen

The Bottom Line: 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.

Specs: Microsoft Windows Mobile 5.0 Premium Edition, 64 MB, Samsung 400 MHzS3C2442, IEEE 802.11b, IEEE 802.11g, Bluetooth 2.0 EDR, 3 in x 0.6 in x 4.7 in, Stylus, Touch-screen

Specs: Microsoft Windows Mobile for Pocket PC 2003 Second Edition, 64 MB, Intel 520 MHzXscale, IrDA, Bluetooth, IEEE 802.11b, 3 in x 0.6 in x 4.7 in, Stylus, Touch-screen, 5-way navigation button

Specs: Microsoft Windows Mobile for Pocket PC 2003 Second Edition, 56 MB, Samsung 300 MHzS3C2440, IrDA, Bluetooth, IEEE 802.11b, 2.8 in x 0.6 in x 4.5 in, Stylus, Touch-screen, 5-way navigation button

Specs: Microsoft Pocket PC 2003, 64 MB, Intel 400 MHz, IrDA, Bluetooth, IEEE 802.11b, 2.8 in x 0.6 in x 4.5 in, Stylus, Touch-screen, 5-way navigation button

The Bottom Line: The latest midlevel CLIE is a capable handheld, but it fails to measure up to Palm's lower-priced Tungsten E on almost every count.

Specs: Palm OS 5.2.1, 32 MB, Motorola 200 MHz, IrDA, 3 in x 0.5 in x 4.4 in, Stylus, Touch-screen

The Bottom Line: Only built-in Wi-Fi is missing from Sony's otherwise fully loaded, clamshell-style CLIE UX40 PDA.

Specs: Palm OS 5.2.1, 40 MB, Sony 123 MHzHandheld Engine CXD2230GA, IrDA, Bluetooth, 4.1 in x 0.7 in x 3.5 in, Stylus, Jog Dial, Keyboard, Touch-screen

The Bottom Line: The handheld meets the laptop in Sony's fully loaded, clamshell-style CLIE UX-50 PDA.

Specs: Palm OS 5.2, 40 MB, Sony 123 MHzHandheld Engine CXD2230GA, IEEE 802.11b, Bluetooth, 4.1 in x 0.7 in x 3.5 in, Stylus, Keyboard, Touch-screen

The Bottom Line: Building on the strengths of its predecessor, the e750 can claim a place at the top of Pocket PC heap.

Specs: Microsoft Windows Mobile for Pocket PC 2003, 64 MB, Intel 400 MHzXScale PXA255, IrDA, IEEE 802.11b, 3.1 in x 0.6 in x 4.9 in, Stylus, Touch-screen

The Bottom Line: While it has some flaws, the SJ33's fast processor and integrated MP3 player make it a good deal for the price.

Specs: Palm OS 4.1, 16 MB, Motorola 66 MHzMC68SZ328, IrDA, 2.9 in x 0.9 in x 4.3 in, Stylus, Jog Dial, Touch-screen