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1 At the top end you have research guys like Forrester research, Boston consulting group or even Econsultancy's paid reports. 2 Banks like Merrill Lynch  & Capgemini publish the yearly World's Wealth Report and in general banks have a high output of financial and commercial papers. 3 Doing Google searches like japan report inurl:.pdf can provide a lot of papers on a topic. 4 Mendeley.com is a good place for finding scientific papers and connecting directly with scientists if you want a quote or specialist research done 5 Roll your own report with a surveymonkey survey I could go on all day talking about data sources, but without knowing what you need its not much use - the data source is dependent on the project, there is no one place to go S