The American Express Platinum Delta Skymiles card is a Delta Airline co-branded credit card. This one is the three Delta co-branded credit cards: Gold Delta Skymiles, Platinum Delta Skymiles, and Delta Reserve. These three cards have different annual membership fees, and correspondingly different benefits offered. The Platinum Delta Skymiles fall into the middle, and has a reasonable fee and benefits just right for me, at least.
This Hilton HHonors Surpass card from American Express is a card for earning Hilton points through spending. If you love Hilton hotels and collecting Hilton points, this card is quite suitable and powerful for you.
Currently, the public offer is 60,000 bonus points after $3,000 spending within the first 3 months of account opening. And there are occasionally better offer of 85,000 bonus points after $3,000 spending within the first 3 months of account opening.