[sweeps]

I'm satisfied with the Costco Amex card. If you shop at Costco, it's a no-brainer -- it's the only credit card you can use there. 3% cash back on eating out, 2% on travel, and 1% on Costco and everything else.

However -- I use Chase Platinum Visa for non-Costco, non-restaurant purchases. When I do the math I get a payback of between 1.5 and 2% in travel rewards. That's helped pay for some nice vacations. Plus many places don't take American Express, so you really need another card anyway.