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The biggest hardware trend marking the launch of Windows 8 is the proliferation of touch-screen laptop/tablet hybrids. Some have screens that pull apart to become separate tablets, while others have screens that flip, twist, or rotate to give you a tabletlike shape to hold. We call those latter models convertible laptops, and one of the best examples to date is the new Lenovo IdeaPad Yoga 13.

The name Yoga is suggestive of the system's big selling point, that the display flips fully over to become a tablet. In fact, it has four basic usable positions -- clamshell laptop, tablet, stand, and tent.

The reason the Yoga stands out from the suddenly crowded touch-screen laptop scene is that it does something other convertible or hybrid laptops do not. When set up as a traditional laptop, the 13.3-inch Yoga doesn't compromise the all-important clamshell experience. The excellent double-hinge design means that it looks and works the same as any other ultrabook laptop, unlike the complex and often clunky mechanisms in systems such as the HP Envy x2, Sony Vaio Duo 11, or Dell XPS 12.


The Yoga works best as a full-time laptop and part-time tablet, because when it's folded back into a slate, you still have the keyboard pointing out from the back of the system. Although the keyboard and touch pad are deactivated in this mode, it's still not ideal. Plus, despite the hype, Windows 8 is still not a 100-percent tablet-friendly OS, and there are some frustrations that span all the Windows 8 tablet-style devices we've tested.

The Yoga certainly seems to be everyone's choice for a great Windows 8 ambassador -- both Microsoft and Intel have touted it as a best-in-class example, and Best Buy is currently featuring it in a television ad. At $1,099, you're paying a bit of a premium, but not outrageously so, for an Intel Core i5/8GB RAM/128GB solid-state drive (SSD) configuration (note that our early review unit had only 4GB of RAM installed), but a less expensive Core i3 version starts at $999. If I had to pick a single first-wave Windows 8 convertible touch-screen laptop, the Yoga would be at the top of my list.

The slim, premium-feeling Acer Aspire S7 was one of the very first Windows 8 laptops I spent a significant amount of time with in the weeks before the official release of Windows 8. My colleagues and I agreed at the time that this 13-inch touch-screen laptop was an excellent advertisement for Microsoft's new OS, but our demo unit was preproduction hardware, and not ready for benchmark tests. Now, with a final consumer-ready version of the same machine in-hand, we can report performance and battery life test results and give this excellent laptop a review score.

In hands-on use, this Aspire S7 looked and felt identical to the preproduction sample from October 2012. Like many of the laptops and convertible laptop/tablet hybrids we've reviewed recently, the Aspire S7 is a new-from-the-ground-up ultrabook, rather than an existing Windows 7 product updated with new software. The S7 is also one of the thinnest, slickest-looking ultrabooks I've seen, highlighted by a white minimalist chassis and a lid covered with Gorilla Glass (much like the HP Envy Spectre). Inside is an Intel Core i7 CPU and something that has already become almost commonplace in Windows 8 laptops: a touch screen, built into a 13.3-inch 1,920x1,080-pixel display.

In Windows 8, with its tile-based interface and support for new and varied gestures, the touch screen becomes a useful secondary tool, as seen here, or in systems such as the Dell XPS 12 or Lenovo Yoga. It's not something you'll use every time, but after a few days, you'll find yourself reaching for it more and more, usually for a quick swipe or to scroll up and down long Web pages. While the hardware and design of the Aspire S7 is definitely premium, it's a tough sell at $1,649, especially with touch-screen Windows 8 laptops available for as little as $529. An Intel Core i5 version of the S7 is available for a more reasonable $1,399, and your sizable investment gets you a 1080p display, a 256GB SSD, and that excellent touch screen.