I'm assuming you mean the Rosemont & Aurora, IL ones since Downers Grove is IL. I think Luvpurplepurses is at Aurora OH.
Aurora is bigger, has better selection incl. retail bags. Even so, they don't put all the retail stuff out so definitely ask if you're looking for something. Even charms. Ask multiple people - some know what's up, others not so much. Of course check all SLG cabinet drawers.
Rosemont is smaller but still decent, partly b/c they hammer through inventory, being across interstate from O'Hare. Again, ask for stuff esp. since they don't have room to put everything out. The actual Rosemont mall is way better - higher end stores and a parking system living in 3019
If I had to pick 1, I'd do Aurora. I mostly do Rosemont more b/c it's much closer. FYI, I only focus on retail items. Interested in hearing whether others have different experiences or tips!