How about 135,000 American Airlines miles by using the two browser trick to get both the Visa and the Amex personal cards (50K each), and then, probably later, getting the business card (35K). Total spend $7,500, giving you another 7,500 miles, for a total of 142,500 miles.

Details on my website below in the Credit Cards > Annual Fee Cards page (though that fee is waived for the first year).