You probably won't have any "problems" using TX or TXP. I certainly go with the posters in that TX-400 is (was) my favorite, until Kodak chose to stop the 4x5 and 120 production.

I have tried other films and keep coming back to Tri-X. It has something other films miss. The T-grain films have great linear gray scale reproduction but seem to miss something in the artistic vein. I can't explain it - I call it "heart".

Truly, dr bob.