Why the Starwood Preferred Guest American Express credit card is special

While it's not immediately clear from the advertising copy, the most unique feature of the Starwood Preferred Guest American Express is the ability to transfer the points you earn to over 30 major airlines, most at 1 for 1 or better.

This gives you the ability to redeem your miles in the most efficient way, with the home airline, giving you maximum flexibility.

In addition, it also lets you redeem your points for free nights at Starwood hotels (Sheraton, Westin, W, Four Points, Le Meridien, St. Regis) with no blackouts. The only catch is it has to be a 'standard' room (sorry, suites are extra!), but as long as one is available for sale, you can book it for free with points.

Not many cards offer that kind of flexibility for both air and hotel awards with minimal dilution. To learn more about the card, click here.