Now Tri-X comes in two flavors, ISO 320 which is meant for indoors under atrificial lights and seems to handle highlights a bit better, and ISO 400 which is meant for natural sunlight and seems to have better definition in the shadows.
Then you have the old Tri-X in both speeds which is the formula from my youth. I think they stopped making that formula back in the early to mid 90's. To me it is THE classic B/W film. ( yes I am an "old" guy and allowed my opinion, lol )
I have not done a side by side comparision yet, but my understanding is that on the newer Tri-X they have smoothed out the toe and heel of the film to give fuller mid tones. I have also been told, although again I have not verified it, that the newer Tri-X "sees" reds a little differently then the old one.
I have 30 rolls of the old Tri-X in the freeze and just ordered a second back for my 500 so I will be doing some side by sides as soon as the weather cooperates a little.
Along with how it handles shadows, I am interested to see the grain structure of the newer Tri-X. The old film was great for doing portraits of men, particularly working men who had some character to their face. That third picture of yours is the look I remember and is very encouraging!
Good light to you,
Harry