How long do you keep a deck of cards until you open up a new one? Also, what is your reasoning for doing so? For example, I REALLY hate clumping because I do lots of sleights and flourishes, plus I'm always holding a deck of cards (not always, but you get the picture). I did though, meet someone who had been using the same deck for 4 months; the deck was in terrible condition but he said that if he could do sleights with a crappy deck, then he could do them easily with a good deck. So these are just two completely different points of views, but what do you think?