From a very limited personal experience of this film, I can clearly see a difference between my Tri-X negs from 2001 and those I took this year. Seems finer grained and a bit more TMax-like, but the grain structure does not have that regular geometric look that I see in TMax. It seems to be more in between, and very pleasant. XTol 1+1, shot EI 320 in 2001 and 200 this year. I apologise for how imprecise and subjective my statement is, I am sure those who calibrated it will provide more formal comparisons.