Amex is a credit card that gives you good rewards and traveling benefits, airport lounge access, travel insurance, and many more features.
The ForexPlus Card is a prepaid travel card that enables you to load and manage currencies from various countries, thereby making international travel more convenient.
If you regularly travel to the US, an Amex card would be a great choice. Most travelers find that having both cards maximizes the benefits, but it's important to consider your travel habits before making a decision.