The only one I've used is ActiveReports. I've seen end users work with it, but it may not be suitable for your use.

>Thanks,
>
>do you have personal experience with any of those tools and can recommend any one as being pretty easy to use?
>
>>http://www.componentone.com/SuperProducts/ActiveReports/
>>http://www.telerik.com/products/reporting.aspx
>>http://mobility.infragistics.com/reportplus/
>>https://www.devexpress.com/Products/NET/Report-Server/