This report provides an overview of the characteristics of Big Four and Non-Big Four audit firms, with a focus on Deloitte and Macquarie Group. It covers their range of services, geographical coverage, number of staff, industries of specialization, marketing messages, and more. The report also discusses theories such as agency theory, information hypothesis, and insurance hypothesis, and their relevance to the Enron scandal. Based on the information provided, the report recommends Deloitte as a preferred organization over Macquarie.