How does HC-100 results compare to XTOL or D-76 with everything else being equal?
Film processing is a great deal like working wood.
You may work at a superficial level (what my Dad, a good carpenter, called "Being out of control".)
or you may push through the basic, mechanical process to reach the intuitive mastery where we integrate
methodical perfection with instinctive vision.
It really doesn't matter WHICH developer you use. It doesn't.
Furthermore, until you've throughly mastered the craft,
you don't really approach the true differences between, say, HC-110 and Xtol.
Photography is systematic; integrating the film, the developer AND the paper and paper developer with
your technique, in service to your vision is what makes the difference. Just changing one part of the system
prevents you from any progress, but takes you on an endless sideways journey.
All craft is about personal transformation. The curse of photography is the seduction of uncountable developers,
multiplied by dozens of films, and the persistent falsehood that one is better than another, that secret knowledge will somehow perfect our pictures.
A Strad with a badly adjusted bass bar is just a cigar box.