Lenovo's Yoga laptops hardly need an introduction at this point: The company's iconic 2-in-1s are so popular that its competitors have been copying them right and left. Last year's edition, the Yoga 3 Pro, was especially notable for how thin and light it was: just 2.6 pounds and half an inch thick, and that was with a folding touchscreen, too. The problem, we found, was that as easy as it was to hold, that compact design came with significant compromises, including lackluster performance and mediocre battery life. Enter this year's model, the new Yoga 900 ($1,199 and up). Like its predecessor, it has a 13-inch, 3,200 x 1,800 screen and a slim build, but this time it claims faster performance, longer battery life and a sturdier hinge. It is, essentially, an improvement in almost every way.