I have been working with this affiliate for the second year already.
Customer support is excellent, there are no problems with payment, sometimes even on weekends, if you ask them nicely)
The biggest pluses of this affiliate program are conversion and rebills.
Convert with a good approach - comes to 30% in a sign up and 40-50% from registration in the order.
One of the most important features is that the first sale is considered from all the first orders, because of this the commission reaches this size: