You really would like to play blackjack with the best rules available. Blackjack returns 3-2, the dealer must remain on soft 17, players may double up on either first two, twice down upon splitting a set, is a few of the better regulations. The games which only payout 6-5 for a blackjack are ones you should absolutely stay away from. A single match that pays 3-2 for a blackjack typically has higher chances than a multi-deck tournament that pays 3-2, but this isn't always the case; you must carefully analyze the rules.