If you want access to both AA and AS clubs, there is a way to get both for "free" in the first year.
The Citi Prestige card has an annual $450 fee, but will give you a $250 airline credit this year and another one in 2016. The card itself gets you into the Admirals Club, and two weeks after you are approved, they give you a Priority Pass card, good for all Board Rooms. If you spend $3K in the first 3 months, they also give you 50K thank you points, which can be transferred to many airline programs, although not AA or AS.
Google CitiPrestige 50000 and you will find the application page. Many other benefits as well.