So given that I am not well equipped to provide a review I wanted to point you to an excellent article by ExtremeTech that is definitely pro Vista and an equally well observed counter argument by DesktopLinux. After reading both of these you will probably agree with me and be sitting on the fence!
That said I do use Windows 2003 Server SP1 as my main PC that has plenty of great add-on products so I am a bit spoiled already!"