...Any other good sites out there?
Here a few established poker rooms with a very good reputation, which are operating for a very long time:
Pokerstars - great poker room with a lot of players. There are almost 80K people by the tables on average. I think actually this is the biggest and most known poker room. There is enough traffic, but I don't like or rather for me there are not enough small stakes Texas Holdem tournaments, sit and goes or freerolls, but plenty of Omaha tables and tournaments, if this is something for you. They offer almost all deposit and withdrawal methods, but still no cryptocurrencies which is a real shame.
Americas Cardroom - here is also decent traffic. I haven't checked their tournaments lobby closely yet, but I was happy to see a lot of small and medium stakes Texas Holdem tables full of players. There are really enough people to play with 24 hours per day, literally on all stakes and what is important - there are many fishes. I like that they give some rake back to their players (exactly 27%) which can be redeemed every day. Additionally, they accept deposits and withdrawals in BTC.
Winamax - another great poker room with a lot of players, tournaments, freerolls, bonuses, etc. Only not all countries are allowed and their main focus is on France actually and other not restricted EU countries. Still, everybody is welcome to play and cash out the winnings, just need to use the VPN. It is important that they don't have anything against VPNs, because it could cause a lot of problems when one will try to withdraw winnings. They accept: Paypal, Skrill, Wire Transfer, Visa.
I hope this helps a bit. Of course, I only focused on these poker rooms which were not mentioned already in this thread, like SwC or Bet online.