According to a review at freelanceswitch.com/product-reviews/moo-... the cards' quality is very good. Another option you can consider is the full-sized Moo business cards (see geardiary.com/2008/09/02/moo-business-ca... for a positive review of these).
I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.