Well, I don't know much about Actuate either. But according to a friend of mine who worked for both company, these are very different products. Actuate focus on Web presentation, and MSI focus on analysis. You need to pretty much feed Actuate with SQL if you want it to do data warehouseing BI, because it does not have a sophiscated SQL Engine. On the other hand, it does not really care where and what format the report is coming from either. So, you need to be clear about what your users want - more on presentation of canned reports? Or more on BI analysis.