If your looking to game, alienware, if not then almost any other make, but i would suggest not getting dell or acer (as dell customer support is dreadful and acer may brake on you). Samsung do some quite good laptops, but not all of them are good. im not realy an expert of laptops as ive only bought crappy bottom range ones, im more of a desktop guy, but i though i needed to try to know more about laptops (makes models and stuff) i can fix em fine, and i know alienwares, and i bought a samsung and it was good, but slow as it was low spec
Alittle dated,but in terms of reliability: Asus -> Toshibia -> Sony (which I never buy).... -> HP and Acer. Have two tosibias, both are still working great, bought the Samsung RF711-S01 which if you can find on sale for around $750 is an excellent choice but not worth the normal 900 buck price.
Might I throw in a reminder that Alienware IS dell. There's also a lot of unnecessary hatred for Acer here. They're not as bad as everyone says. My dad has an Acer desktop, I've had 2, and 2 acer laptops. Never had a single problem with any of them.