What Makes Up A Good Tarot Deck?

Any good Tarot practitioner will tell you that finding the right deck is one of the most important things you can accomplish. It is very important that you find an authentic, strong deck before you begin working with Tarot...but just what is it that makes a good Tarot deck? Is it the card  stock, the images, the size of the deck...or is it something entirely different? This is a question I'd like to pose to you, my readers...tell me just what makes a good tarot deck, email me with your answers,  I'm going to be writing an article of this very subject and I'd love to hear from you!