check this web: http://web.wenxuecity.com/advpost/BBSView.php?SubID=advpost&MsgID=448

The citi card has a good deal for miles for airlines. Or you can go to: www.cardbenefit.com to choose a credit card you like. The web will pay you 30 USD if you apply through them and get approve later. I did several times, it is very good deal.