With all of the different types of playing cards out there these days I end up getting the question all the time. What kind of playing cards should I be using? Paper or Plastic? Bridge Sized or Standard Poker Sized?
Personally, I almost always use cards that are produced by the US Playing Card Company. This is the company that produces Bicycle cards, Bee's, Tally Ho's, Aviator, and many more. It is the same company that many magic companies use to produce their own custom decks. The quality off all of these cards is high. They spread nice for a good amount of time, and they are nice and snappy. Pick one you like the look of and start practicing!
I have featured some of my favorite decks of cards on this page: http://52kards.com/cards