Micro Center offers the 5.74-lb. Acer Aspire AS5755-9401 Intel Core i7 Quad 2.2GHz 15.6" LED-Backlit Widescreen LCD Notebook in Glossy Black, model no. LX.RSN02.001, for $599.99 plus $19.85 for shipping. (Free in-store pickup is also available in many locations.) That's the lowest total price we could find now by $30, although we saw it for $20 less in December. It features an Intel Core i7-2670QM 2.2GHz quad-core "Sandy Bridge" processor, 15.6" 1366x768 LED-backlit widescreen LCD, 4GB RAM, 500GB hard drive, DVD burner, media card reader, 802.11n wireless, Gigabit Ethernet, HD webcam, microphone, 6-cell battery, and Windows 7 Home Premium 64-bit.

Update: It's no longer available for shipping. However, you can still order for in-store pickup at Micro Center retail stores. (Stock varies by location.)