Coming back to developing B&W negative after many years, availability of developers in professional photography shops in my country (2 of them) is meager: -- Kodak D-76, Kodak HC-110 and Tetenal Ultrafin Liquid. However, chemicals for mixing developers are available at chemicals stores. So, reluctantly, I will mix my own developer(s) out of individual chemicals. Though I shoot with various films, since I don't shoot very much and I intend to mix 1 liter of developer at a time, I should constrain myself to 2 or 3 developers to work with. My first choice is Mytol (Xtol substitute), for general use. Second developer will probably be FX37, for better acutance, at the price of coarser grain (for slow and medium speed films). Any recommendations for 1, 2 or at most 3 developers to mix? Please mention benefits of each recommended developer over D-76 or Xtol (Mytol).