Dark_Jedi's Theatrical DVDs are the best GOUT restorations you'll find.

Harmy's Partially Despecialized editions use multiple sources for the best quality while still getting rid of many of the SE changes. He's working on a fully Despecialized collection as well; he's already done with ESB and is working on ANH.

Other than that, here's a few threads already posted on these boards (and others) that will give you the answers you're looking for:

http://originaltrilogy.com/forum/topic.cfm/Which-version-release-of-the-SW-movies-do-you-watch-and-why/topic/12446/

http://originaltrilogy.com/forum/topic.cfm/Best-edits-of-Ep-2-and-3/topic/10378/

http://www.fanedit.org/forums/showthread.php?3638-Star-Wars-Fanedits-Which-ones-to-get