To build on my last point (which I had intended to also address your post), my concern is that until I know how to produce a good negative/print using one film, I'm not sure that I would really be looking at an apples to apples comparison that is in any way meaningful. The only way to do it (as I currently see it - please correct me as you see fit) would be to do what I described with both films side by side, such that you were looking at a box of FP4+ underexposed by 2/3rds of a stop and over developed by 30% compared to a box of Tri-X shot/developed in exactly the same manner. That just seems like a LOT of work in the beginning that is possibly more likely to confuse than enlighten. But what am I missing?