I pulled Pro down off of MSDN and installed it on my desktop at home. My chief complaint is the lack of a Start button (easily fixed with a 3rd party app.).
Other than that it's nothing special (to me at least).
"A free American means just this: individual freedom for all, rich or poor, or else this system of government we call democracy is only an expedient to enslave man to the machine and make him like it.” - Frank Lloyd Wright