American Express is rated very highly when compared to online payment methods worldwide. However, other banking options like MasterCard and Visa are equally well-established and have security and safety high on their list of priorities. Speed when it comes to deposits is a big plus with AMEX, as online casino players enjoy having their funds available instantly. Although using PayPal, you will get funds into your account just as quickly. Much of the comparison with other payment providers depends on your particular requirements. But, overall, AMEX is one of the top payment options online globally, whether playing online casino or paying online elsewhere.