One script that is supposed to be great is:
http://www.adjuggler.com/
However, if I remember correctly, the guy who owns the company talked shit on the adult industry a while back. He was involved in some political scandal of some sort. He used to run ads on adult sites, but then he gave a bunch of money to a politician and some newspaper wrote about it and all hell broke loose so he said negative shit about adult and online porn.
Like the Hitbox people, he talked shit on adult when it suited him, which sort of stinks, But, I heard his product kicks ass. Your call.
(edited for spelling)