What is the best gaming laptop company?

I'm looking for a gaming laptop around 600 dollars. I want to start off with the best company that makes gaming laptops.
Asus, but your not getting a gaming laptop for that much, i know of a netbook that will play GTA 4 for under your budget if you want to know it. but AlienWare is over priced, your paying for a brand (like a Mac but you still get windows).
You probably won't find a great gaming laptop around $600.
 However if you have hope, Dell/Alienware have great laptops and desktops made exactly for gaming.
 Again, $600 may not give you much.