Best Ad Network

[casbboy]

I am sure this has been answered 100 times within the articles on this forum but: here it is again, with details required:

What is the best Ad Network? ValuClick, CJ, Fast Click, what?
What Ad Networks offer payments based on CPM?
What are the Requirements of each Ad Network?


I ask this because I have a site that did a total of 116 Uniques for August, 562 for September, 1400 for October, and now looks to be like 6000 for November. I have about 1600 page loads a day[25,000 hits]. I think I am pretty close to qualifying for some of the big boys and want to know the best routes to go.

However, I do not plan on doing pop-up or pop-under banners at all.

Thanks
Ryan