DO NOT PRESS THAT BUTTON
I had to make the same choice 4 months ago, I had the cash but my only concern was the Warranty.
I've seen plenty of alienware laptops (and they outperform other laptops (but not all) - I assume you're a hardcore gamer), but they're NOT that much reliable.
I finally bought a Sony Vaio VPCF1190x. You can customize these laptops to fit your needs. Find more details about these F Series laptops on
Sony Style Website.
This is a Vaio, but still it's an amazing gaming laptop...