Pros: When it worked, it was wicked fast.
Cons: Horribly unreliable. Technical support was even worse. Strong arm tactics to prevent returns.
I bought a lemon. Immediately after purchasing, it needed a repair. I asked to have the on-site service. They said the repair wasn't fixable on site. I had to send it back to the factory -- three weeks later I got the computer back. A few months later the hard drives died and the raid card went bad (yes, it did have raid in a laptop). The tech support reps were worthless. I had to send it back again. A few weeks later, I got the system back. But it was broken again, this time the pointer device was busted. I asked for my money back. No such luck. Believe it or not, this company seems to have staff whose job is to quell angry customers through intimidation. But I realized that they may be in violation of their credit card agreement by not posting the refund policy prominently in their agreement as stipulated the most credit card merchant rules and regulations. I called them out on it. When you buy from Alienware, you submit to binding arbitration on any dispute, which means you can't sue them or take them to small claims court. I told them that I was willing to go arbitration and if I won I would alert everyone I could on how to get their money back. Apparently this tactic worked. A few weeks later I got a complete refund.