My personal experiences:
Qosmio. It's basically a nuclear hot paper weight, which weighs slightly short of 30 pounds. One hell of a gaming computer if you can afford cloning your harddrive onto a new one monthly/a ssd drive with ~500gb on it.
Alienware laptops are also similarly godawful. Their performance degrades quickly, in 6 months or so. Last one I had became a paperweight rather fast. Not as much trouble with overheating as the qosmio.
I suggest you stay away from Acer, as well, unless you're looking at the really high end stuff. The medium tier/low tier Acer laptops somehow always manage to turn into flaming piles of shit the day after the warranty expires.
Gateway is just a NO. Awful. Absolutely awful.
I hate dell with a passion personally, because of how shitty and generic everything they make tends to be.
Eh, now that I think about it, i've personally had problems with roughly every name brand laptop.
If you treat your laptop right, it'll last. I suggest a Qosmio with a SSD drive, but, you really have to maintain the cooling for it to live long. Get the dust out of it bi-weekly/monthly for the best performance.