Only two at the top of my list :)
I've pretty much played at most of the popular ones and quite a few that aren't that popular but out of around 100 poker rooms that I know only 2 are miles ahead of the rest Pacific poker
and Noble Poker these are my two main poker rooms that I play at.
There are a lot that come a close 2nd like UB, Panther, pokerhost, pokerworld.
Then there are the ones further back down the list which I play but are probably my last choices if there isn't much going at the above ones like, pokerstars, prima network, bluelizard and pokerclub.
Prima is really starting to take a back seat as there are so many idiots playing there now, i've been called all the way to the river me betting 300 every card and the guy calling me every card had 72 off and not even a 2 on the board, I have no idea what some of these people are playing but it sure ain't poker, lol.
Good luck at the tables
Tony ( The Webmaster )