All Tablet PCs

The Bottom Line: The new generation of similarly sized Netbooks do more and cost less than the Samsung Q1 Ultra Premium, putting another nail in the UMPC coffin.

Specs: Intel (1.33 GHz), 1 GB DDR2 SDRAM, Mobile Intel 945GMS Express

The Bottom Line: The Fujitsu LifeBook P1620 makes a few notable improvements on its predecessor, but a new breed of cheaper mini-laptops are on the horizon, making this ideal only for heavy tablet users, who may prefer a full-size tablet.

Specs: Intel Core 2 Duo (1.2 GHz), 1 GB, EPEAT Silver, Mobile Intel 945GMS Express

The Bottom Line: We're impressed with the engineering behind Axiotron's rebuilt, tabletized MacBook, but the target audience is likely very small, especially since Windows-based convertible tablets do so much more.

Specs: Intel Core 2 Duo (2.2 GHz), 2 GB DDR2 SDRAM

The Bottom Line: But for its disappointing battery life, the Toshiba Portege M700 is an excellent hybrid of power laptop and well-designed tablet.

Specs: Intel Core 2 Duo (2.2 GHz), 2 GB DDR2 SDRAM, EPEAT Gold, Mobile Intel GM965 Express

The Bottom Line: HP's Pavilion tx2000 combines a convertible tablet design with an entertainment-focused laptop to create an interesting hybrid, thanks to an improved tablet screen and mini remote control.

Specs: AMD Turion 64 X2 mobile technology (2.1 GHz), 2 GB DDR2 SDRAM, 4.4 lbs, 12.1 in TFT active matrix, Microsoft Windows Vista, Microsoft Windows Vista Home Premium

The Bottom Line: Ambitious but flawed, the Fujitsu LifeBook U810 has more of a traditional laptop design than other UMPCs, but the otherwise excellent keyboard is marred by the loss of several important keys.

Specs: Intel A110 (800 MHz), 1 GB DDR2 SDRAM, 1.6 lbs, 5.6 in TFT active matrix, EPEAT Silver, Microsoft Windows Vista, Microsoft Windows Vista Home Premium

The Bottom Line: HP's attractive Compaq 2710p convertible tablet suffers from one fatal flaw, choosing a ThinkPad-style pointing stick over a touch pad, effectively ruling it out for a large number of potential users.

Specs: Intel Core 2 Duo (1.2 GHz), 2 GB DDR2 SDRAM, 3.7 lbs, 12.1 in TFT active matrix, EPEAT Gold, EPA Energy Star, Microsoft Windows Vista, Microsoft Windows Vista Business

The Bottom Line: The lightweight Lenovo ThinkPad X60 Tablet now runs Windows Vista--and remains one of the best convertible tablets on the market.

Specs: Intel Core Duo (1.66 GHz), 1 GB DDR2 SDRAM, Mobile Intel 945GM Express

The Bottom Line: The HP Compaq tc4400 convertible tablet offers decent performance and battery life, though we recommend adding more RAM.

Specs: Intel Core Duo (2 GHz), 1 GB DDR2 SDRAM, Mobile Intel 945GM Express

The Bottom Line: If money is no object for you, the Toshiba Portege R400 is an eye-catching, Windows Vista conversation piece, but the rest of us will want more performance from a system this expensive.

Specs: Intel Core Duo (1.2 GHz), 2 GB DDR2 SDRAM, RoHS, Mobile Intel 945GM Express