Steer clear of Vaio's Dravyk as Trev correctly stated, The heatsinks are shit in them and only normally last until after the warranty ends, so it means getting the slags fixed time and time again. They suffer from "sleeping sickness" and just turn off, when they get hot as they are cheap bastards, and use inferioir parts to perpetuate the need for support..
I doubt very much as you will do a shitload of image processing, 3d rendering, video editing or audio editing. So that leaves you with a surfing machine and for that a little Dell or something similar will do ya.
If you just want to spend cash or need something tasty then its
http://www.alienware.com or
http://www.go-l.com 