1) Chase Preferred United Mileage Plus Debit Card- 1:1 on general purchases, 2:1 on UA purchases. DL is my primary airline, but I use this card to rack up *A miles. At $65 a year, I consider it a bargain.

2) Chase Freedom Visa Card: Started when I got bonus cashback in my top 5 spending categories, and 1% back on everything else. They have since watered down the benefits, but I am keeping it as it's free.

3) Delta Gold American Express: Primarily a DL flyer here, so makes sense to have despite DL SkyMiles reduced value. Double miles on DL purchases.

4) CapitalOne Platinum MC: Just applied for this card a few months ago. Figured it was about time I get a card that does not charge foreign transaction fees. 1% Cashback.

5) I keep a basic Chase Rewards Debit card in case I have problems with my other debit card when accessing ATMs abroad.