Forms of nitrogen fertilizer

We sometimes are asked to name our favorite form of nitrogen fertilizer.  I don't have a particular favorite, because each form has its advantages and disadvantages.  Will a particular form guarantee higher yields?  I probably cannot guarantee that.  Some forms have distinct advantages for certain uses or methods of application.  AY-204 is a 1986 Bulletin from Purdue University that is still relevant.  It does a good job of covering the various forms.  It does not discuss manure or compost as a nitrogen source.  Organic forms such as manure and compost, add microbes and other nutrients that can make them a superior nitrogen source, but the nitrogen is the same no matter what source.  The nitrogen is the most available for plant growth in the nitrate form.  Microbes get the nitrogen to the nitrate form.