The Citibank AAdvantage World Mastercard currently offers 7500 miles for a platinum and 5000 miles for a gold card.
You can find the information here: http://www.citibank.com/us/cards/cardserv/worldcard/
As with any AAdvantage card, there is a limit in the amount of miles you can earn in one year. Gold cards are limited to 60,000 miles a year, and platinum to 100,000 miles a year. But the great catch is that AAdvantage elite members (gold, plat, exp) are exempt from this limit and acn earn unlimited miles.
Hope this helps!

-Eli

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Washington/Miami
AAdvantage Gold