Why Credit card payment processor do you think is better and why, Mastercard or Visa?

When you compare credit card benefits to reach your decision, it’s generally more important to compare perks from the issuer rather than those from the payment processor. Perks offered by credit card issuers  typically including features like cash back, rewards points and, often, substantial sign-up bonuses.

The only difference in the master card is that it gives back the refund if the price of the product is reduced within days.