I was also a little disappointed in the X240's backlit, island-style keyboard. I've used a number of Lenovo keyboards, and this one just doesn't feel as nice (for lack of a better term). The spacebar has an oddly stiff feel that made me miss-tap it frequently, and the key spacing didn't feel as comfortable. It's not a terrible keyboard, but it's not as outstanding as I've come to expect from a ThinkPad.
TrackPoint fans will still find the nubby red dot in the center of the keyboard, but the dedicated buttons are gone. You'll need to depress the whole glass trackpad and hope your finger is in the right zone (there are five) to get the type of click you want. I found middle clicks especially hard to hit accurately. Speaking of the one-giant-button trackpad, it depresses easily and quietly. Its generous size enables you to make the most of Windows 8's multitouch gestures, but I ran into a few frustrating moments when it registered two-finger scrolling when I only had one finger down. Apart from that, I found it to be smooth and responsive for navigation.
If you're looking for a workhorse laptop with incredible battery life, Lenovo's X240 is a solid choice. Its graphite-black chassis won't turn heads, but it will help you travel light and get a lot of work done. Just think hard before you order one with the 1366 by 768 touchscreen. This machine deserves better, and so do you.
Sign up for CIO Asia eNewsletters.