Shalott,
I'm sorry this thread has been frustrating for you, but it has been fascinating to read!
I'm so glad you're adding the Noblet onto your wishlist. Once you get the Dodal in your hands, you'll realise what a wonderful investment you've made, and want the Noblet. (I ended up eventually ordering the uncut sheets of both decks as well and have them framed in my house, everytime I walk by them I'm awed by the beauty)
I compare the cards all time, in fact, I rarely have just one of the decks in front of me. Two other decks that I often use in comparison that haven't been mentioned in this post (not considered standard TdM decks) but I find absolutely integral to study are:
The Tarot of Paris (early to mid 1600s)
http://www.spiritone.com/~filipas/Masquerade/Reviews/paris.html
http://l-pollett.tripod.com/cards59.htm
The Tarot of Jacques Viéville (mid 1600s)
http://l-pollett.tripod.com/cards61.htm
Putting these two decks with the Noblet (1650) is a wonderful way to see what was going on 50 or so years before the Dodal.
I also have a copy of The Tarot de Nostradamus, which is unfortunately a bastardized version of the Jean Payen Tarot (around 1760), but my understanding is that the images have not been tampered with.. so it is very usefull for study as well.
http://www.tarotpassages.com/nostra.htm
Here's what I do, (often). I get out Stuart Kaplan's Encyclopedia of Tarot, volumes 1 and 2. Then I get out the Cary-Yale and Sforza Visconti decks. Then the Flornoy Noblet, Tarot of Paris, Vieville, Dusserre Dodal, Flornoy Dodal, Nostradamus, Heron Conver, Hadar, and Jodo-Camoin.... and pick a card to pull from each deck. I lay them out in the order above. I look for similarities and differences, if something catches my eye, I open the encyclopedia and start searching to see if I can find another occurance of it. Often I'll grab my iBook and start searching the web as well to see if I can find any non-tarot references to something.
By doing this, sometimes I see patterns. For instance, on The Fool.. most of the cards have bells around the waist, but on the Dodal, Noblet and Payen the collar has no bells while Conver changed the curved collar to pointed and added bells. Both Hader and Jodo-Camoin also have the bells. To *my* mind, the bells don't belong there, they are a later enhancement.
Then I look at the stockings and the dog on The Fool. I can't help but think that Noblet got it right. If there is an Ur tarot, I think we would see a bare-assed fool being attacked by a dog. Noblet makes this perfectly, *uncomfortably* clear. But even on the Noblet, the leggings are still miscolored to my mind. Hadar actually has it closer to what I imagine they should look like, but he left out the exposed privates, which I consider crucial. And this brings to mind the Fool card from the Italian "Este" deck from the late 1400s, which seems to have an "exposed" fool being playfully teased by children.
Now of course it's possible that Noblet was a wicked man and added in the nakedness, but I tend to consider the nakedness and teasing "essential" to the card... so that means that, for me, Dodal, Payen, and Conver got it wrong... at least in that aspect.
I think a good example of my type of comparative thinking is apparent in the article I wrote the the Association for Tarot Studies newsletter on the Cary Sheet last month, especially when I was discussing the Wheel of Fortune, you can read it here:
http://association.tarotstudies.org/news24.html
I find my greatest enjoyment with the cards comes from doing the types of comparisons you mentioned in the first post. I suspect that until some definative answer (if ever one should arise) about what exactly constitutes the Ur Tarot, we are all left to study and form our own opinons about what that deck might have/should look like. Personally, I take a broader view than the TdM decks, or certainly any one deck, and include other historical decks as clues leading back to the birth of tarot.
Here are the Noblet and Este fools:
robert