Perfect by Mark Mason
A standard deck of 52 cards is presented. There are no additional cards, no repeating card sequences.
The deck is fanned out below, a card is selected and set aside. Now the remaining cards are counted individually in the spectator's hand. The viewer can say stop at any point.
You turn up the stopped card and the card on the table and turn them both over: It's always a pair of cards, eg 7 of spades and 7 of clubs, or queen of hearts and queen of diamonds!
No exchange, just demonstrate. Comes with the special gimmicks and an explanation DVD in English.