While based in the UK, FreePint provides a broad set of product reviews and research spanning the US, European, and Global information services markets. I would recommend a subscription to purchasing departments that license multiple information services (e.g. news, financial markets, credit products, filings, etc.) as they can assist with product qualification and valuation.
FreePint is one of the few publications that seriously covers the SI space. I have written several articles for them over the past few years and will be publishing an article on sales triggers next month.