I would be interested in hearing about your test suite, and helping out. It sounded a little selfish earlier when I suggested that you pile on even MORE testing. I am happy to share the load, if we can figure out how to do that.
I use Bergger, HP5, and FP4, mostly in that order. I used tri-x only as a reporter eons ago. I somehow found over the years that HP5 gave me snappier contrast AND more detail in both highlights and shadows, so I have pretty much stuck with that. The Bergger is even longer in scale, but it is grainier so I don't enarge it, even at 5x7. I use the Jobo Expert drums for sheets, the 1500 series tanks for the occasional roll, and I am just beginning to use trays and experiment with ABC.