Alienware all the way for me, If you need support, call support, Tell Dell that you have an alienware, and some guy is in your kitchen within 24 hrs fixing it. Alienware has special support with Dell without any extra payment for the support.
Spilled a coffee on mine, torched it, 24 hrs later, new screen, keyboard, HD, completely free. Of course I may not of mentioned the coffee.
3 times I had a guy in my kitchen because earlier versions had LCD hinge issues.
Warranty is up now and I had to fix the Fan by myself, not fun, get extended warranty and the guy coming to your Kitchen for a few more years.