The Aluminum Falcon said:
Don't forget the DVNR. In my opinion, they did cleanse Star Wars of some of its character by removing too much grain. The crushed blacks are bothersome though; you do lose detail, stars, and lightsabers. Furthermore the 2004 version was only done at 2K.. If this is of no issue to you, then I suppose the Blu-Ray may be fine for you.
Normally HDTV vs Blu-Ray comparisons appear on AVSForum. You just need to wait for them. They've done ones for Back to the Future and Aliens.
By sheer coincidence, the Lost in Space Blu-Ray comparison shots are from the AVS forum, too!