Lenovo's Yoga family keeps growing, giving the 2-in-1 treatment to the exceptional ThinkPad X1 Carbon to create a 14-inch, 2.8-pound convertible that will delight business travelers.

Sleek and slender; Winning keyboard and stylus; Solid performance

Expensive; No USB-C or Thunderbolt port; Screen wobbles when tapped

About 700 Euro (~$1000) separate the least and the most expensive version of the Lenovo ThinkPad X1 Carbon - a substantial amount of money, especially considering the high base price of 1300 Euro (~$1800).

light and sturdy chassis; very quiet; large ClickPad; integrated UMTS modem; backlit keyboard; input devices offer great feedback; good viewing angle stability (90°; very good battery life; spacious SSD with 512 GB capacity; semi-matte touch display; HDMI & Ethernet via dongle; Gone are the clunky...

very high price; integrated touchpad mouse buttons; webcam quality is marginal; lacks true Fn-keys; Innovation can also have its drawbacks: the redesigned touchpad without dedicated buttons and the rather unusual Fn function-row is going require a serious adjustment period for long-term ThinkPad...

For Lenovo, the fourth time's the charm. The 4th-generation ThinkPad X1 Carbon gets the business ultrabook formula right with a keyboard, screen and battery life that live up to their promise, wrapped up in a durable, 2.6-pound package.

Of course, price is going to be the big sticking point with this laptop, and I suspect most buyers will gravitate toward the lower-end configurations. The $1,400 version is about in line with the $1,200 MacBook Air, and that's clearly the machine which both Lenovo is targeting and which buyers are...

Head-turningly svelte and blazingly fast: Everything you want from an ultrabook; MIL-SPEC approved; Absolutely gorgeous display; Good old flat-black Lenovo charm

Slow to boot (nearly 30 seconds); Surprisingly buggy during normal operations, like running Windows Update; Clickpad is merely OK; Puny battery

The Lenovo ThinkPad X1 is clearly a product for a consumer business, so a strong focus on quality, neglecting the design slightly. The strengths are a body strong and resistant to falls, an ergonomic keyboard and spill-resistant, the fingerprint reader to protect your data from prying eyes, HDMI,...

RAM, USB 3.0 port, memory card reader, fingerprint reader, spill-resistant keyboard; Chassis resistant to falls, Bluetooth and optional WiMax

Internal memory; not eye-catching Design

Lenovo got a lot of things right with the ThinkPad X1 Carbon, and all the advantages carry over to the Carbon Touch: it's light, gorgeous, functional, and powerful enough for every realistic ultrabook task.

Touchscreen works well; Gorgeous; sleek design; Solid performance; Great keyboard

Gets really hot; Expensive; Too much bloatware

The Lenovo Thinkpad X1 Carbon Touch is the rare notebook that does just about everything well, from performance and battery life to its touch abilities and superb display. Its $1,399 price tag is relatively high, but if you want the best, it is worth every penny.

Thin and light; ultra high resolution display; great performance; folds flat on tabletop; good battery life; innovative "adaptive" keyboard

Expensive; touchpad overly sensitive

I admit it, the moment I saw the Lenovo ThinkPad X1 Carbon I had a serious crush. That's not wildly unusual for this technologist, but those first crushes often turn to indifference once I put a machine through its paces.

Lovely design, 3 lb; weight, high res display, superb keyboard

No dock or battery slice options; battery life just average

Lenovo's ThinkPad X1 Carbon Touch retains almost everything that is good about the original X1 Carbon while adding the touchscreen many value in a Windows 8 machine.

Light weight and slim; Semi-rugged and durable construction; Excellent keyboard for an Ultrabook; Multiple inputs; including TrackPoint; Speedy performance

Only two USB ports; Sub-par touchpad; Touchscreen means lower battery life; Viewing angles aren't as wide as we'd like

As far as laptop ranges go, there's very little introduction needed for the ThinkPad family. First produced by IBM more than twenty years ago, Lenovo acquired the entire range a decade later.