Well, I own mostly all the releases.
1. Original VHS release (the only change is “Episode IV A New Hope” added)
2. 1997 Special Edition
3. 2004 Special Edition
4. 2006 Limited Edition (f*** yeah!)
5. 2011 Blu-ray
6. An assorted collection of those very rare 8 and 16mm reels. (f*** yeah!)
7. Episode I (Collector’s Edition) and II VHS
8. I-III 2-Disc DVD