What are the Best Credit Card Processing Companies from your experience ?

What are the pro and cons like:
Also do they need warranty ?
Does they pay every month ?

I bought image mod.

I want to pay for 1000 views(at download page) of images.
1] I want to count only 1 ip for 24 for each image
or
2] I want to count only 1 ip for 24 any image

How to do that ?