The budget laptop is undergoing a radical makeover. This week's best laptop deals include some of the most popular budget systems, including the HP Stream 14, a cloud-based Windows laptop that's going head-to-head against the Chromebooks of the world. Also on sale this week is the value-priced Acer Aspire E5, Dell's entry-level Inspiron 15, and — for our well-heeled readers — Lenovo's high-end Yoga Pro 2.