I wouldn't go for a Dell ...they are pretty good for offices and stuff but still if you want quality and performance then you should probably buy yourself one of those Graphic designing custom made+server+coffe maker
))). Seriously now, you should tell us what your gonna do with this new computer, you wanna use it for gaming or just office work. If that's settled then we could actually tell you what's the best option.
blade: I don't know I'd buy somethin' overclocked, I don't trust then enought