We have started working with Syncfusion Essential Studio WPF for more than 6 months.It's a wonderful experience and there are plenty of controls to use/try/explore. We have used the Diagram Controls, Excel IO / Spreadsheet, Tab Control (IE or Chrome style), Datagrid and hierarchical Grid Controls. Cool controls; it increased our productivity and helped us to meet the product market timeline. Their Direct-Trac technical support team has done a wonderful job in answering our quries and providing quick solutions. We have evaluated several other controls for our requirements before purchasing Syncfusion. Its worth going for it. I would surely recommended Syncfusion.