I agree with EpsilonVector, the big issue is monitor space. A laptop can usually support a second monitor. But a desktop can support [three][1] or [four][2] monitors. The more, the better.


  [1]: http://www.hanselman.com/blog/ThreeMonitorsICantGoBack.aspx
  [2]: http://www.hanselman.com/blog/ReviewMimoMonitorsIMoPivot.aspx