Without some pretty specifically defined criteria, the whole notion is kind of silly.
There are a few advantages that some schools my have in terms of recruiting base, financial support/reserves and such, but for the most part a coaching job is as good as coach makes it.
If CBJ (or any other SEC coach for that matter) bangs out a championship or two and strings together a few 10+ win seasons, he creates his own national prominence, exposure, financial strength, etc.
There's really no SEC school that couldn't do that with prolonged success on the field. Arguably, there's one or two schools that are not likely at all to be able to generate that success, but otherwise they're all great jobs. It's almost like attempting to argue which NFL HFC job is best. The answer to that is "the one not owned by Jerry Jones."