Dell precision workstation and mobile workstation both with nvidia quadro graphics cards and plenty of ram. 3D, CAD, graphics

old pic running two video cards.



wife uses a Dell inspiron and a samsung netbook.
dell optiplex in the kitchen
dell xps in the bedroom hooked up to the TV

whatever you go with, budget for an upgrade in two to 3 years max.
for business use, focus on stability over speed and gizmos