Sams Club Mastercard is pretty good. 5,4,3,2,1 percent on different categories. Can buy something small at Sams and they will redeem the rest in a check. I think that is how my wife does it.

PenFed is another we carry with about the same discounts. They have several different cards with different rewards. PNC is another one with the same discounts but I don't like it as good as they are always wanting you to call about fraud stuff and will lock it out till you do.