Bovada, ACR and BCP. ACR and BCP are on the same network. I like those sites because I hear payouts are good, you can deposit with CC, one that can be used internationally, and they have great customer service.
I really like Lock's traffic for cash games and tournaments.. and the software is great. But I dont know if I would risk some of my money on that site, because everyone says that there payouts are slow, if you even get the payout. Now if you have enough money that you can deposit their and risk never seeing it again, I would say go for it!
EDIT: This topic has been covered so much... Im sure you already know.. Do a little bit of research in the "Poker Rooms" section and you can find out everything you want to know.