Lenovo offers its 5.5-lb. Lenovo Z50 Intel Haswell Core i7 2GHz 15.6" LED-Backlit Laptop, model no. 59426425, for $579 with free shipping. That's $40 below our mention from three weeks ago, $270 off list, and the lowest total price we could find. It features an Intel Core i7-4510U 2GHz Haswell dual-core processor, 1366x768 LED-backlit LCD, 4GB RAM, 500GB hard drive w/ 8GB SSD, 802.11ac dual-band wireless, DVD burner, Bluetooth 4.0, webcam, 4-cell battery, and Windows 8.1 64-bit.