Microsoft’s Surface Pro 2 packs a punch for business users. With its Intel 4th-Generation Core Series Haswell processor and a speedy SSD, this slate beats many Ultrabooks. More important, the Surface Pro 2 offers much longer battery life than its predecessor, lasting about 8 hours on our test. Other highlights include a vibrant 1920 x 1080, 10.6-inch display, an active stylus and your choice of two keyboard covers. An optional docking station that supports external displays up to 3840x2160 pixels in resolution means this could be the only PC you need.