The AAU is a nice club to be in, but I'm not clear that it is much of an advantage specifically. They don't have much money to dole out, and money is the root of all power.
Or something like that. Some very good schools are not AAU schools because they lack graduate school power (ND).
The B1G has some excellent graduate programs but I'd opine the ACC has better undergrad programs, aside from Laville.