Asus Taichi review | Laptops and netbooks Reviews | TechRadar:

"Anything one screen can do, two screens can do better. Such is the thinking behind Asus's latest premium notebook-tablet hybrid, the Asus Taichi.
The second screen fitted to the lid of the 1.25kg (2.76lbs) chassis enables you to turn this ultra-portable laptop into a tablet and take full advantage of the touch-optimised Windows 8 operating system.
As with previous Asus products such as the Asus Zenbook Prime UX31A or the Asus Transformer Pad Infinity, the Asus Taichi is a gorgeously designed with a tapered wedge that measures only 3mm (0.12 inches) at its thinnest point.
Lift the lid and the gunmetal grey brushed metal effect reminds us of the excellent Samsung Series 9 ultra-portable laptop while, as ever, comparisons will be drawn with Apple's MacBook Air."

Toshiba Tecra R940 review | Laptops and netbooks Reviews | TechRadar:

"The tagline behind the Toshiba Tecra R940 is designed to be a serious business laptop.
More recently, this is an area where Ultrabooks such as the Asus Zenbook Prime UX31A, Lenovo ThinkPad X1 Carbon and Samsung Series 9 have been making waves, with their long battery life and speedy solid-state drives.
For the most part, though, Ultrabooks tend to be light on features, and if there's one thing the Tecra R940-1CW has, it's business features."

Toshiba Satellite U840 review | Laptops and netbooks Reviews | TechRadar:

"The Toshiba U840-10V comes in at the lower end of the price scale for Ultrabooks. Available online for around £650 (around AU$998/US$1,034), it beats the price of the likes of the Asus Zenbook UX31 by a couple of hundred pounds, and the likes of the Samsung Series 9 by enough to buy a whole second laptop."

ASUS Zenbook Prime review (UX51Vz): a blazing 15-inch Ultrabook with a lofty price:

"Windows 8 has ushered in an era of category-defying devices, with hybrid machines that bend, flip around, lie flat and otherwise contort flooding the market (and our offices). When virtually every Windows 8 product we've reviewed possesses acrobatic abilities, it's easy to forget regular ol' laptops are running Microsoft's new OS, too. One such machine is the $1,949 ASUS Zenbook UX51Vz (aka the U500), a 15-inch Ultrabook with the trappings of a multimedia powerhouse, including a quad-core Core i7 processor, NVIDIA GT650M graphics and a 1080p IPS display -- and no gymnastic tricks up its sleeve. Another thing it doesn't have: a touchscreen, which is available on plenty of other Windows 8 notebooks, not to mention other upcoming Zenbook Prime models. Considering that (possibly glaring) omission, is the UX51Vz still an attractive option at this premium price point? Head past the break to find out."