Citi® Credit Cards
If your business frequently requires travel and American Airlines is your carrier of choice, consider this CitiBusiness card. Rewards start at 1, points, which is rock-bottom compared to other programs, and TPG ranks a ThankYou point at 1.
Comparing Credit Card Offers from Citi
Otherwise, Pure GCE gets my vote. Good product except the product isn't the best. I've tried a few different brands and this isn't the worst but it's not the best.