If you don't mind buying refurbished, Newegg.ca has a solid deal on a 15.6" laptop that packs a punch and will give you a lot of value for your dollar. Right now, they've put the refurbished Lenovo IdeaPad Z570 15.6" Laptop with Intel Core i7 2670QM, 8GB RAM and 750GB HD on sale for $619.99. This is one of the lowest prices we've seen for a notebook with these specs and it should be considered if you're in the market for a capable and affordable performer.
Although there isn't much written about this particular model, Lenovo notebooks are generally well built and have one of the better keyboards of the major laptop brands. The image shows a US keyboard layout, which will appeal to most, and let's not gloss over its powerhouse second-generation i7 quad-core processor, spacious hard drive and amount of RAM. Though it won't do anything for you in terms of gaming, it's a very good price for a laptop with these features. Productivity related programs and multitasking should be a breeze, however the battery life is a little on the lower end at up to five hours.
The deal is live now and ships free.