When Windows RT was released a year ago Visual studio came out with only few controls, basic controls such as Date picker and data grid were and still missing from the standard VS controls If it was not for Syncfusion controls I would not been able to submit my app to the Windows store, I am using their excellent data grid, date picker, chart controls, tile views, tile hubs, input controls to name a few (my app is SmartMoney if you are interested), they were the first company to offer C# Xaml Windows RT controls Their suppoprt is more than excellent, at one ocassion I found a bug, it took them less than 24 hours to fix and send me an updated DLL, this is unheard of. They also have an active and very helpful public forum Although I only used their RT controls, I have used other vendors controls on other platforms (Infragistics for WinForms, WPF and Silverlight ) so I can make an objective comparison. I am quite happy with the quality of Syncfusion controls and with the excellent support I received, and feel very confident to recommend them Hope Syncfusion keeps the good work !!