I prefer the special editions over the originals. I guess I would take 2004 version (minus Hayden as a Ghost) as the best available version. I think that visuals are extremely important for world-building and immersion, so I welcome the visually improved/new scenes (e.g., the new shot of Ben’s hut in ANH).
(Note: I still think originals should be released in high-quality format. But then again, neither 1997 nor 2004 SE version were released in HD format.)