The 2006 version is an anamorphic widescreen transfer, the "Special Edition" is letterboxed. Oddly enough, the 2006 version also has more special features, so the "Special Edition" is not even worth your time. A great site to find other DVD specs: www.dvdempire.com.
How does the video presentation of the 2006 anamorphic DVD compare to the older Special Edition DVD, in terms of sharpness, clarity, etc? I have the Special Edition, and I did find the image fuzzy in many places. Does the 2006 DVD improve on that any?