I reviewed a Cyber Power high-end laptop last year. It had essentially the same specs as another Alienware gaming notebook I was also reviewing, but for a good $1200 less.
It was a little rough around the edges and reeked of "generic Chinese manufactured components" , but performed very well.
Generally, I think for the price you spend on a good "gaming notebook" you can get a good "gaming desktop" plus monitor, and then with the money saved get a $600 general-purpose notebook that, if you lose or damage, will still leave you with a working computer on your desk.
Or get a netbook for less money and for the ultimate in portability.
-Llama