Thanks for all the advice guys. I want the computer to last for a very long time and for all future mod updates for GTA IV and if someone comes up with a mod for GTA V when it comes out. I was looking at these two computers:
http://www.alienware.com/Landings/desktops.aspx
I can afford both but if the Alienware X51 will work then I will buy it. I am EXTREMELY concerned about the detail, sound, realistic look and feel of the game, and smooth gameplay. I HATE lag and want to eliminate as much of it as possible. I know i am asking for the moon but I'm hoping it's possible!! The Alienware Aurora is obviously the better computer but it