I've been programming web applications with datagrids since 2004, developing (or, attempting to) my own extensions to datagrids, and modal popups over the course of the next decade in .NET 1.1, 2.0, then 4.5. Telerik came along via another application we use and develop for. Since then, I've found Telerik controls much easier to use than trying to finagle .NET controls. Another reason being many browsers stopped supporting modal windows. Telerik made it much easier to have inline modal windows. Sure, there may be some hiccups (I've seen plenty of posts from years ago about such) and sometimes unclear demos (comments would be nice to say what code changes or is required by what), but there's always workarounds, searching Google, and making unit test pages. I've already created an intranet application based solely on Telerik controls (AJAX UI for .NET). So, thanks again for a great product!