If you want to spend more of your budget, something like an SSD will improve real world performance more than a better CPU like for instance:
http://www.newegg.com/Product/Product.aspx?Item=N82E16820148361
http://www.newegg.com/Product/Product.aspx?Item=N82E16820148348
128GB Drive... $270 dollars BUT its super dooper quick. My Windows 7 with an SSD is night/day compared to one with a mechanical drive.
Tease.







