It's a balance, Xtol at Full strength and replenished gives the best all round qualities in terms of fine grain, sharpness and tonality, better than fresh unused Xtol which is still good but I'd use at 1+2 for the best balkance if used dilute. I used to do that with ID-11/D76.
Originally Posted by markbarendt
If I went for a true fine grain developer like Perceptol or Microdol-X I'd again use at 1+2 and that combination does give the best balance of speed, sharpness, fine grain and tonality. I have a friend who uses Perceptol like this.
So yes in the example you gave above you're right but I was referring to the differences between a fine grain developer like Perceptol and a standard like ID-11/D76.