Its not a question about which is best, its more of which is more applicable to your business, Its a comparison in terms of availability , taxes , customer service and reliability.
Payoneer has higher rates of taxes per Compared to paypal, it is designed to work for freelancers and not for personal use, it is a virtual bank (you decide whether thats a good thing or a bad thing) , payoneer isn't widely accepted in serious business places.
Paypal has lower taxes than payoneer (even though its still relatively higher than other alternatives) , it is designed for both personal and business use, it is an actualy bank , and its accepted worldwide
the information i provided is vague and too standard, but its just to serve as an explanation to the idea i'm trying to express