Originally Posted by 2MuchMark

The best payment processor, is the best one for you.

You have to contact all of them and ask all of the questions you've got. What are the fees? When do you issue payouts? And most importantly, what are the Terms and Conditions? (Really! Read their TOS...)

Don't lie to them. If you or your business has been refused by another payment processor because your location for example, don't hide this. Each processor has their own ways they can work with with you. Don't lie about your content either. If you lie to them now and get caught later, your funds will be withheld, your site won't be able to process transactions, and all the work you have done up to that point could be lost. Tell them your exact situation, your domain, your content etc, and if there are any potential roadblocks, they will tell you how to adjust for them, and about potential work-arounds if they exist.

Try to think of your payment processor as your business partner. If you work with them the way they can work with you, you will both come out on top.