You can also use the built-in diff / merge tools shipped with Visual Studio which is pretty good too. He's the one invoked by default when you use built-in git or team explorer features.
There's also some VS addons which add options in the context menu to compare 2 files in the solution.
And you can also invoke it through command line (or as settings in Tortoise Svn / Git for example):
devenv.exe /diff %base %mine %bname %yname