Any other diners club cardholders out there?
It's got quite a good amount of features, but the best is the free primary cdw, which I haven't seen on any other card.
It also has a decent mileage transfer reward program, and it gets you into a decent amount of international lounges (domestically it only gets you into EWR and MIA lounges)
Annual fee is $95, but is waived if you have a CitiGold checking account...