What are the 2 best cards in poker?

The 2 best cards to receive as a starting hand are pocket Aces (2 aces in your hand).

In games (non-poker games most of the times) where the suit decides the winner in case of an equal hand, the Ace of spade is the best one of the 2. Note that games where the suit decides the winner are very little known, they are almost not played in casino's.