-Edwin-,
Casale Media > Home is one that quicky came to mind. I am not using them right now but I have in the past and I was very pleased with them.
I do know some others who use Casale Media and are pleased. Casale Media is reliable and respected.
They require your site to receives more than 10,000 unique visitors per month and attract an English-based audience. However, I see you wanted one with no traffic requirements, so that might present a problem for you. But they are all of the other things you wanted.
Here are some other requirements they have:
Casale Media > Publishers > Application Requirements