Hilton HHonors - Hilton Family Hotel Near IAD (Dulles) - Better Rate than AAA?

I plan to stay at one of the Hilton-family hotels located close to IAD over a weekend in mid-July. Excluding the advance pay/non-refundable rates, which I am not interested in, the best rates that I am finding are AAA Rates. Are there any current promotions out there that will get me a better rate than AAA?

Hilton Team USA usually gives better rates then 3A (fully cxlable and no deposit is required). Discount open to everyone (expires June 30, 2009).

Link Here (http://www.swimming.hfadvantage.com/)