Siena in reno. they have double down on any 2 cards, single deck games. making it the best blackjack i have found in town so far. i just went there for the first time yesterday and won 9 out the 10 hands i played. which was mostly luck, they where suffling after every 2 deals for 4 people. so the penetration wasn't to good. most of my counts where -1 0 +1 with my highest count being +5..and i lost that one with an 18 vs a the dealers 20 but anyway it has a .17% house edge, lowest i've found.