You’ve read all of your free items this month. To register, get added benefits and unlimited access to articles, Become a Member. Already a Member? Sign in. Advertising Age Article Abstract Apple Slides in Survey of Clients That Agencies Most Want to Work With Nike on Top; Colgate, Reckitt Among Those at Bottom By Rupal Parekh, Published on August 30, 2013 4 Want more Access, Content & Connections? Upgrade to Membership. We are glad you are enjoying Advertising Age. To get uninterrupted access and additional benefits, become a member today. Become a Member Already a member? Log in.