http

/www.pcworld.com/article/169277/Alienware_m17x_review.html
Alienware M17x.
I had/have the M15x which came out in 2005, And even that was Pretty fast Especially when i upgraded it to a Gtx 560m.
The Alienware M1*x Laptops are Superfast and easily upgradable.
The M17x Might be a bit above your budget but depends where you live (In the Uk its more expensive because Currency Translation is non-existent practically.