There are other sites that I know of but they are currently in beta. I know there is one that uses litecoin. But as far as I know hands down the best site to play on if you want to do this is still Seals. They even have a nice HUD that you can use as well and FREE!!! You just have to get used to the value since obv it takes a lil bit to get used to.
i agree, swc is the besr for now. My buddy tried betcoinpoker site. And its in beta. So far they experiece a lot of problems, and traffic is so low, almost no people. They only come to play freerolls and thats it. They did a good joob by making it, but not their time yet