I highly recommend the XtraReports reporting tool. I found it much easier to develop with compared to Crystal Reports; not to mention that it has more features than the Crystal Reports that is provided with VS 2003. XtraReports can be used to build static reports or to build reports dynamically. It includes a lot of great built in features as well; such as being able to convert your report to a PDF or opening the report in a separate window. The tools on the toolbar save me a lot of coding time. XtraReports definitely makes developing reports easy.