These are all great answers. To clarify, I am not looking for cash back. Mostly, I value airline miles. I am aware of the sign up bonuses and will do that when appropriate. Not doing it too often right now because we are trying to refinance away from a high interest mortgage. Once that is done, we can get more aggressive.

Currently, the suppliers don't take AmEx although that may change in the future. I would love to get membership rewards, or max out with some SPG otherwise. With all of the devaluations, I think that we may focus on Hyatt through their card and the Ink products.

Mainly, I saw that the UA Club card is a great opportunity with the 1.5 miles/dollar and am hoping that there are other similar cards out there.