AS5741-432G50Mn notebook - $699 after $99 Cashback. The cashback needs to be lodged by 31st of this month, so I'd recommend getting it at least a few days before then.
My only complaint here is that it only has 2gb of ram - but this is cheap to upgrade if you need 4gb+ (~$50 from msy)
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INTEL C i5-430M 2.26G
2GB DDR3 RAM
500GB HARD DRIVE
15.6" WXGA HD LED
Core i5 for sub $700, that's freakin hot