Which of these laptops should I buy?

The latest high-end laptop is the Lenovo IdeaPad X240, with a quad-core Intel Core i5 processor and a 13.3-inch screen.The X240 is the first computer to support USB-C and the first laptop with HDMI, so you can connect the monitor and headphones to the device as well.The $1,299 (£929) laptop comes with a 1080p screen, 3GB of RAM and 128GB of storage.The ThinkPad X200 comes with Intel Core Duo...