USAA seems to have a good web site on rental car discounts through them with AVIS, BUDGET and HERTZ. They wave the yearly enrollment fee of 60 dollars for their Gold Card membership, however, they aren't specific as to whether they charge you thereafter for it, or extend you or what. They seem to have great rates for USAA members though, around 25 percent. Airline discount rates for cars are the worse. I have always had the best luck with AAA but now that I joined up with USAA, I have still to use them. What are your selections for best rental car discounts?