The Lenovo Yoga 3 Pro was one of our favorite laptops of 2014, but mostly for impractical reasons: At 2.62 pounds and half an inch thick, it was exceptionally thin and light, even for an ultraportable, but it suffered from relatively short battery life and performance that trailed some rivals. Fortunately, the company just announced a new flagship, the Yoga 900, and it appears to improve on its predecessor in every way that matters. For starters, it movies from one of Intel's low-powered Core M chips to a sixth-gen Core i5 or i7 CPU. Between that and a new option for 16GB of RAM, the performance here should be faster than it was just a year ago. At the same time, Lenovo didn't have to compromise much on weight: the Yoga 900 is just heftier, at 2.8 pounds and 14.9mm (0.59 inch) thick.