1: The Original Television Christmas Classics [Plus a bonus Music Video and a bonus Christmas CD] http://www.amazon.com/exec/obidos/ASIN/ ... eimprovemz

From what I understand, this includes:
a. This edition of Rudolph, which I bought last year: http://www.amazon.com/exec/obidos/ASIN/ ... eimprovemz
b. This edition of the Frosty/Frosty Returns double feature: http://www.amazon.com//exec/obidos/ASIN ... eimprovemz
c. This edition of Santa Claus Is Comin' To Town: http://www.amazon.com//exec/obidos/ASIN ... eimprovemz
d. And a bonus CD and extra Christmas specials.
2: The Original Christmas Classics [Limited Keepsake Edition] http://www.amazon.com//exec/obidos/ASIN ... eimprovemz

From what I understand, this includes everything set 1 does, but without the bonus CD and music video, plus a few new Christmas shorts.
3: Christmas Television Favorites http://www.amazon.com//exec/obidos/ASIN ... eimprovemz

From what I understand, this includes:
a. This edition of The Grinch: http://www.amazon.com/exec/obidos/ASIN/ ... eimprovemz
b. This edition of The Year Without a Santa Claus: http://www.amazon.com/exec/obidos/ASIN/ ... eimprovemz
c. This edition of Rudolph and Frosty's Christmas in July (and I assume Rudolph's Shiny New Year is on this DVD as well) http://www.amazon.com/exec/obidos/ASIN/ ... eimprovemz
d. This edition of Frosty's Winter Wonderland: http://www.amazon.com/exec/obidos/ASIN/ ... eimprovemz
e. And more extra specials added as bonus features on some of these discs.
4: Classic Christmas Favorites http://www.amazon.com/exec/obidos/ASIN/ ... eimprovemz

From what I understand, this includes everything from set #3, plus three new specials?
Are my assumptions correct as to which editions of these films come in which sets? Looking back at all this, the wise choice would be for me to purchase sets 2 and 4, but are they really superior? They're both the more recent of the sets (sets 1 and 2 being the originals, sets 3 and 4 being more originals plus the sequels). I heard that these specials have been cut down from their original TV airings and some of their DVDs are that way, so does anyone know which of these sets contain the most complete versions of these films?