yeah if you want real poker action then Americascardroom is the best even if it's fiat , but lets face it all bitcoin poker rooms combined don't have 5% of the action going in ACR
coinpoker may be good in the future , but at the moment I can't see more than 40 players that register in buy in tourneys while their freerolls have over 1000 players so the action isn't that big there + you have to buy their token which may be worthless at any moment
No affilliation, but I honestly think this is the best time to play CoinPoker. They're currently taking no rake and have several 'overlays' where extra CHP is being shoveled in.
It's incredibly +EV if you're a decent poker player, and probably even if you're just an ok player.