When can I dictate to a sponsor which billing company I want them to use
 

I'm not a fan of a certain cascading software some sponsors are using and would rather having them use one of the processor for my traffic instead.

When can tell the sponsor(s) to use solely the processor of my choice for my traffic without offending them?

Thanks

when you run your own paysite.

hit me up, 216233171 - lets talk.

Thanks for the offer but I'm not looking to make any new deals at this time.

Instead of telling the sponsor(s), you should ask the sponsor(s) if they would be willing to direct your traffic to only a certain billing processor. If you bring them enough money or the sponsor wants to add a extra feature to their site (affiliates can send their traffic to the billing processor of their choosing), they'll more than likely listen to what you have to say.

You can let them know what a advantage it would be to let their affiliates chose the billing processor they want to use. I don't think they would get offended for asking and giving them your thoughts as a affiliate.

First thing 12 clicks has said I agree with in a long time. :Graucho

I'm sure a few of the smaller programs might consider this if you had enough traffic to make it worth their while but really..