Buy a notebook instead, you won't regret it
Why not suggest an Alienware M17x? I'm sure the OP "won't regret it" either.
I am using a netbook (HP dm1-3014au, popular as dm1z) and I am very happy with it. Screen size is fine for reading. I play many low-end games with it and it can comfortably play 1080P movies and there is no lag whatsoever on any browser as yet. It weighs 1.6kg, which is very light.
At this budget, it makes sense to buy a netbook really.