A best bet is the the 7.6-lb. Toshiba Qosmio X70-ABT2G22 Intel Haswell Core i7 2.4GHz 17.3" 1080p Laptop (pictured), model no. PSPLTU-04F01X, bundled with the Razer Orochi Blade Edition Elite Wireless Laser Gaming Mouse, model no. RZ0100300300R3M, for $1,299.99 with free shipping. (The mouse is automatically added to cart.) That's a saving of $380 and the lowest total price we could find for this laptop, although we saw a similarly-configured model with 16GB of RAM at this price two weeks ago.
Features include an Intel Core i7-4700MQ 2.4GHz Haswell quad-core processor, 17.3" 1920x1080 (1080p) LED-backlit LCD, 12GB RAM, 750GB hard drive, DVD burner, NVIDIA GeForce GTX 770M 3GB graphics card, 802.11n wireless, Gigabit Ethernet, 1080p webcam, LED-backlit keyboard, USB 3.0, HDMI output (with 4K capability), 8-cell battery, and Windows 8. The ambidextrous mouse features a 3G laser sensor, Bluetooth 2.0, USB, and maximum 4,000 dpi resolution; it requires two AA batteries.