If you are tired of using various editors for xml editing,here is your better editor from Microsoft.
Microsoft has developed a wonderful editor for XML which works with .NET 2.0 framework which assists developers in creating XML applications.It allows authors to rapidly build and edit small sets of XML data as a test bed during the development of XML-based applications. With XML Notepad, you can create XML document prototypes quickly, easily, and in an iterative fashion, using familiar metaphors. XML Notepad offers an intuitive and simple user interface that graphically represents the tree structure of XML data.
It also includes XMLDiff to visually compare the differences between 2 two XML files.
Look at the below screen shots
Click here to download it ,Enjoy