If you travel a lot internationally AMEX is your best bet if your card is ever lost or stolen. 24h replacement generally free of cost and no liability on transactions done since lost or stolen. Also online security is highest with Amex and its definately a status symbol especially with the Charge Card (no preset limit). Acceptability is quite limited but most quality establishments accept it. Rewards are phenomenal and service is too good. If you are lucky to enough to be eligible for the gold card or above, the cocierge service can get you into the hottest events in your city, the kind where tickets are always out or the events are 'Invitation only.'