Poker site with highest hourly winrate for NL20-NL100 games?

[OtZman]

I'm currently playing NL50 at Prima, but I might switch as the rakeback drops down to 30% in February.

So, which poker site/network has the easiest games? I'm currently playing NL50, but will probably also play NL20/NL25 and NL100 (and hopefully higher in the future). I'm looking for the highest hourly winrate including any rakeback and bonus.

Also, how is the competition at the mentioned limits on Prima compared to other sites?