This is a hard question to answer. right after black friday, I feel Merge was on top.. However I feel Merge really has drop the ball. Currently Revolution is on top but right behind is Bovada.. Bovada I feel has promotiions the little small stakes poker player but however they do have the anonymous tables.
Then there is horse coming up from behind. That is america cardroom. hey seem to attract people and also have small stakes .01/.02NL instead of .02/.04NL
Now that Big Part that I think all of them lack is some good .10, .25, .50, 1.10 tournaments. basically you are lucky to find a 1.10 tournaemnt or under tournament or when you do the structure really sucks. I think if a online poker site
would run cheap with good stuctures like poker stars
did... they would be on top easily.