I have always used crystal reports for my reporting needs, it's quick and simple so I never thought I would need your reporting tool.
But a few days ago, I tried to create a purchase order in CR, and was hitting walls because I needed to access non-normalized data in a legacy database with a lot of business rules that had to be observed and CR could do some of the work, via subreports and shared variables between the reports but it was going to be very difficult to maintain and support this report in the future.
However when I cracked open Telerik Reporting, and was able to use multiple datasources within my report, and alter the values at runtime (item_databound_events), the value of your reporting tool just shot up to the top of my list.
I can do so many more things with your tool than I could ever do with CR when it comes to multiple datasources and accessing muliple platform databases.
p.s. Crosstabs would be nice :-)