Biggest poker networks

[madman1980]

Is there any statistic or list of the size of the different poker networks? I always played at the party network with my eurobet rakeback deal, but now eurobet changed to pokerroom, and i like the software less and there's fewer players. So I want to find another site that offers much of what party did, but with the possibility for rakeback.

I've heard about UltimateBet and PrimaPoker, but I don't know how big they are. Are there any sites you would recommend, preferably with a big number of players so that when I play fullhanded and people leave, there's always new people sitting down.