I hate to get in the flame line, but seriously, these people are right. From personal experience I can tell you that Alienware is a R.I.P.O.F.F. Please stay away at all cost. Their machines are WAY overpriced, and their customer service is SO bad. ... My friends tried to tell me to build my own but I didn't listen. ... I was svcked in because of the 'cool' alien head-style case. Hope this helps you change your mind about Alienware.
My story exactly, which is why I also posted my warning against it. I had the money and thought I would finally have a computer with bragging rights. Well, I did. For about a year. Now it's a $10,000 paperweight, and as soon as you need customer service is when you find out just who you got into a bad deal with. So I paid almost $1000 a month for "bragging rights". I had to go "low" this time around to replace my system. I bought one from Costco last week that is in many ways superior to my Alienware and it was a whole $700. Yeah. I was an idiot, but I won't make that mistake again. Plus Costco doubled my warranty and has a free English-speaking customer service and tech support.
[No offense to non-native English speakers by the way; it's just hard for an English speaker to understand heavily accented non-native English over a telephone, so native-language customer service is a huge benefit.]