I pick Disneyland Paris as my favorite, because it is the most photogenic of the five. I noticed how on the other four castles there are certain angles that make it look awkward, but not the one in Paris.
I say Paris as well, it is the most realistic and imo the most beautiful.
Actually, WDW and DL castle look MORE real,
comparred to the Castles they were inspired by.
When they were designing the Castle for Paris,
they were challenged by the fact that there are
so many castles nearby. SO, to distinguish it
from what is nearby, they decided to make it
more of a fantasy castle, one that you would
very likely see in childrens storybooks, but not
in real life.
Consequently, as for uniqueness and beauty,
the Paris castle got my vote, BUT for matters of
the heart, the 1st Castle in Anaheim wins,
because it was the castle that Walt built, and
the only one he walked through.