So i've got Blue Cash from American Express, and oddly, i've been getting invitations to the Platinum card. Now i pay in full anyways, but never wanted to pay an annual fee. How many of you have gotten an Amex charge with no fee? I would be happy with the green or gold card for i have no used for the platinum at my age (21). They haven't upped my credit limit or anything but keep asking me to get it. Advise would be nice.