The Xrev add-on for Revit is a brilliant tool that will streamline the procedures for any practice.  We found it makes issuing and transmittals a breeze, reducing all forms of file generation from CAD files, fax sheets and hard copy print outs to the push of a button.  And best of all, while Xrev does its thing, you can get on with the real work, without having to go back and remember where you were up to.