Glad I'm apart of the Amex family
I think it's best to carry one of each, they all offer exclusive tickets and events. For example my American Express has exclusive offers for various concerts and shows, Discover gets exclusive NHL seats and offers including Six Flags 5% and orange carpet entry, MasterCard does exclusive MLB events and seats and Visa does Cirque du Soleil, NFL, and Broadway exclusive events/offers. They are all great offers, and THIS is why I carry all four networks
And of cours once again to parapharase gangham style: " amex gets the booty and that's imprtant when your a pirate"
.... meaning if you take a ghetto girl out she will recognise the green charge card but might not even recognise some of the revolvers as being amex.