Interview at least three managers to get a feel for whom is offering the services you feel most important to you. The basic services are often the same, but placement fees, experience level with tenant screening,renovations, and up and down markets can impact your listing a great deal. Often if its a large company there will be a person who has never seen your home answering your questions. The longer they have been doing it the more likely they are to have encountered all the issues and solved them before.