Best Blackjack: UnifiedGaming

Single-Deck Blackjack

Set:
1 Deck is used which is good, because as less decks are used as more easy it gets to keep track of the cards.
The cards are shuffled after every hand though which makes it more complicated to keep track of the cards. You start off with the same conditions and probabilities every round.
Betting Limits are $1-$25, $10-$50, $25-$100 and $100-$250 which is very good because you can bet as little as $1 up to as much as $250.
The house edge is -0.14% down to 0.0% (depending on playing strategy) which is exceptionally good because in this case the player has the edge over the house.
Rules:
The dealer stands on A-6 which is standard.
Doubling down is allowed only on 9, 10, 11 which is what land based casinos offer you. You can double down on 9, 10, 11 after you split pairs which is a very good option.
Pairs may be split to 4 hands which is excellent and lots of fun. You can split only 'like' cards. Aces get only one additional card and cannot be split again.
You can surrender against 10 and Ace after the dealer has looked at his second card (late surrender). Late surrender vs. Ace only if insurance is taken. When the dealer has an 10, or an ace showing, the chance of losing is greater than 75%, which makes it a good option for you.
!!!: Both bets are lost if doubling or splitting vs. an ace. Only one bet is lost if doubling or splitting vs. a 10.
Insurance is offered if you think that the dealer might have a blackjack.

6-Deck Blackjack

Set:
6 Decks are used which is standard. It makes it more difficult to keep track of the cards. The cards are shuffled at about 50% penetration level (after about 50% of the deck was played) which is good because it helps you to keep track of the cards more easily.
Betting Limits are $1-$25, $10-$50, $25-$100 and $100-$250 which is very good because you can bet as little as $1 up to as much as $250.
The house edge is - 0.05% down to 0.44% (depending on playing strategy) which is exceptionally good because in this case the player has the edge over the house.
Rules:
The dealer stands on A-6 which is standard.
Doubling down is allowed on any first two cards which is better than what land based casinos offer you. You even can double down after you split pairs which again is exceptionally good.
Pairs may be split to 4 hands which is excellent and lots of fun. You can split only 'like' cards. Aces get only one additional card.
You can surrender when the dealer is showing a 10 before he takes a look at his second card (early surrender). You can surrender when the dealer is showing an ace after he takes a look at his second card (late surrender).
When the dealer has an 10, or an ace showing, the chance of losing is greater than 75%, which makes it a good option for you.
Insurance is offered if you think that the dealer might have a blackjack.

Spanish 21

Excellent rules for the player. All the ten-spot cards are removed from the decks though (just the 10s, not the Jacks, Queens and Kings). To compensate for this off balance in the odds, the casinos have made the payouts more rewarding.

Total	Consisting Of	Pays
21	5 cards	3:2
21	6 cards	2:1
21	7 or more cards	3:1
21	6,7, and 8 (mixed suits)	3:2
21	6,7, and 8 (matching suits)	2:1
21	6,7, and 8 (all spades)	3:1
21	7's (mixed suits)	3:2
21	7's (matching suits)	2:1
21	7's (all spades)	3:1
Note: These bonuses do not apply if they are a result of doubling or splitting.

Set:
6 Decks are used which is standard. The cards are shuffled at about 50% penetration level (after about 50% of the deck was played) which is good because it helps you to keep track of the cards more easily.
Betting Limits are $1-$25, $10-$50, $25-$100 and $100-$250 which is very good because you can bet as little as $1 up to as much as $250.
The house edge is 0.48% which is very good in Spanish 21 terms.
Rules:
You can play up to 5 hands at once which is excellent.
The dealer stands on A-6 which is standard and even below because it is Spanish 21.
Doubling down is allowed on any on any card count and any number of cards which is better than what land based casinos offer you. You even can double down after you split pairs which again is exceptionally good.
Pairs may be split to 4 hands which is excellent and lots of fun. Even to split aces a second time is allowed.
You can surrender after the dealer has looked at his second card (late surrender). When the dealer has an 10, or an ace showing, the chance of losing is greater than 75%, which makes it a good option for you. Even a non-busted doubled hand can be surrendered, keeping the initial bet.
!!!: A player's blackjack wins over a dealer's blackjack and pays 3:2. The player wins 21 ties. Both excellent rules.