Again, I am in the Detroit area, but have dance friends that own Chicago Dance. The owners there are great. They are actual dancers and not just sales people. I also know the owner of the Fred's on Michigan Ave. Worked with them when they owned the Bloomfield Arthur Murray in Michigan. I would stay away from the Fred's in Chicago.
Chicago Dance is the place to go. We drive all the way there from Michigan to work with the owners on our dancing.