2 years ago I would have chimed in 'Dell' like some hyper fanboy looking to feel good about my overpriced OEM computer...
But now:
Well no matter which OEM you go with, you WILL hear some horror stories.. in my personal experience.. Dell has gone downhill not only the components they choose, but VERY much downhill in service.. my wife's Dell has needed to be serviced about 6 times in 1 year... and 5 of those 6 times it took between 3 -5 calls before they actually shipped the needed parts...
One of my best friends just got a new P4 system from dell, and immediatley... blue screen erros in winXP etc... its been over a month, and he cant figure out whats wrong, Dell refuses to send out a Tech, or to replace the RAM (most likley problem)
On the other hand, Gateway (whom I used to despise)
My father in lawy bought one a year ago... has gone through 4 hard drives and a video card.. this is in a 4000$ system...HOWEVER... the support was good, the technicians I talked to were TRAINED, and had at least A+ level knowledge.... opposed to Dells, who new about as much about computers as my dead grandma.... also after poking around in the gateway, I noticed they seem to be using fairly decent parts
I would go with Gateway, simply for the service
Oh, I also used to work as a system admin at a HS, we had many dells.... . and many problems, mostly with their hard drives and cheap monitors.. the RMA process was painful.... I would not recommend Dell to anyone now, though at one time they would have been the only OEM i would buy from
As far as Alienware
they suck, just read
www.resellerratings.com