I used betcoin, game play was pretty good, won around 0.1btc
The biggest downfall which is why i wont play there anymore is because of their slow withdraw time. It took almost 7 hours to get my btc back.
If it were faster or instant like most sites, betcoin would be fantastic.
well 7 hours isn't that big time to wait , and I think you requested your btc in the wrong time cause usually low amounts like 0.1 btc don't need that much time to process
in general if you play MTTs or SNGs you should play on betcoin , if you want to play cash games I would recommend you any site from the WPN network like Americascardroom
the cash traffic is great there , but you need to verify your account and it's USD based but you can depo and withdraw with BTC