I've been watching various pre-built gaming computers on newegg, but the one I was watching and most interested in http://www.newegg.com/Product/Product.aspx?Item=83-229-... isn't for sale anymore. Then I came here and it looks like cyberpower computers aren't reliable or something which puts me back at square 1.
I don't know how to build my own computer, I could probably figure it out using google if I had to, but I would prefer to just either find a prebuilt one or a custom built one that they would build for you or something... not really sure what to do, but my price range is right around 1200.
Try ibuypower.com They have alot of options for you. I hear their shipping can be bad, but they will replace any broken items free. I've read reviews and they range from Good to terrible but if I was buying a computer I would buy from them.
Alienware over charges ALOT and so does Maingear and DigitalStorm, they want a WHOLE lot more than what the computer is worth, like selling a computer worth $5000 for $8000. Ibuypower does not charge that insane premium, but they are also the least well known and therefore you are not buying a name such as Alienware.
ibuypower.com is good like sargetchimera said. The sad truth about this is most computers that are prebuilt are for casual users, not gamers, so a prebuild will never fit the need perfectly.
You could look at a rig of the month feature, like the one on mmo-champion and look at having a lesser known computer shop building what you want. Might cost a little less and it's tailored to what you want and need.