Goya hair is short and curly (sorta). Light emitter on or off makes little visual difference although it may well be scene lighting specific. Render took 5 hours 11 minutes, so rendering him bald (2 hours) then rendering his head and hair using progressive with 12 samples (maybe 1 hour) is still miles in front. Again, this is specific to the type of hair where the little speckly artifacts won't be noticed.