Pros
I loved the people I worked with, great camaraderie. Managers were very knowledgeable and willing to help, which made this job a great learning experience. Partners were motivated to get things done, not a lot of push back on your audit work provided your documentation was good. Travel wasn't too bad (2 months a year) in my group. Good visibility of executive staff - you feel engaged at all levels of the organization. Lots of opportunities for growth - flexibility to move into new areas as you advance your career. You could spend your whole career here if you so desired.
Cons
High staff turnover, as is typical with audit. Quality of engagement staffing was hit or miss. Company was somewhat understaffed when I left meaning teams were always shifting and you were working with new, unfamiliar people from different offices a lot. Local clients are all over Chicagoland, which made for some long commutes on engagements in North Chicago or other outlying suburbs. Hours can get long, as is typical of public accounting.