It's a franchising chain, so your experience at one site means absolutely nothing compared to your experience at the other. I know one of them bought out all the files from Philidor when they busted (which seems like a sketchy transaction, but it may have just been ill-advised), and I interviewed with another - but the representatives seemed like they were oblivious as to how to run a company. Best thing you can do is ask a lot of questions with whoever is hiring you and gauge how good of a businessperson you think they are.
