For laptops I have used alienware for 10 years without any problems. When it comes to desktops I build my own but if not I would recommend alienware or falcon north west.
Build your own... much cheaper and not hard...
Falcon and Alienware(Dell) are way to expensive (nice laptop though), a lot of that price is labor.
A "cheapy" gaming PC can be easily had for 600$+.
Make all your last demands for I will forsake you and I'll meet your eyes for the very first time, for the very last.
maynard <ibis>: they are awkward and last 2 damn long. I prefer thinner smaller ones