I'm honestly not overly familiar with Resharper but if the "Go To implementation" you are talking about is when you can click on a method call and it will take you to that method's code then I would suggest the "Productivity Power Tools" created by Microsoft.
private void foo()
{
// does stuff
}
private void main()
{
// hold down CTRL, foo() below will turn into
// a hyperlink that you can click on
foo();
}
Here's the link http://visualstudiogallery.msdn.microsoft.com/d0d33361-18e2-46c0-8ff2-4adea1e34fef/
This will allow you to hold down the CTRL key which turns methods and variables into hyperlinks which when clicked will take you to where these were defined originally.
These Tools also can clean up unused Imports/using statements at the top of you code-behind/class files. And my favorite auto bracket completing
