One vote for personalized font.
(It was a quick and dirty test when it was free to create fonts. Later, when I decided to create a better one - it was no longer free...)
To make everybody happy:
You write a few to the persons closest to you who would expect a handwritten card. He does the same. Then create a font and print the rest.
(Or hire amkonkey to write the cards while you phone them to please everyone
)