Dark Jedi's "V3" DVD upscales of the official 2006 bonus DVD are the best "pure" selection; however, if you're looking for picture clarity, you may wish to check out Harmy's "Despecialized Edition" which is in essence a color corrected cut-and-paste job blending the 2004 footage with elements of the original trilogy (and, despite my simplistic description, this is done rather skillfully!) Both projects are equally well respected and regarded, but are entirely different - so it's up to personal taste as to which you would prefer.