What is a Great Custom or Factory made gaming laptop on the budget of $600?

I'm looking for a Great Gaming Laptop on the budget of 600, i'm going to pick on the most high end one on the list that is made, So, please help me! 600 dollars, im going to be playing games such as APB: Reloaded, League of Legends, Call of Duty: Modern Warfare 2, and some others with similar graphics, Thank you!