Hi Robo,
I see you're concerned about minimum grain...
Although current Tri-X has smaller grain than before, it is a present type of grain, so both film and developer are precisely against what you want...
The good news is Tri-X can give you small grain too: you can develop it with D-76 or Xtol as if you used it at 400, but simply underexposing it a stop at 800.
In Rodinal its speed is close to 200, so reaching 800 is a serious push...
Well exposed, the film resolves detail very well.
Both types of look are totally different.
And at 200 in Rodinal, with delicate agitation, and at 20C, 19C or 18C, grain is small and sharp, beautiful, and tone is right...
Pushing it in Rodinal is OK if your scenes are very low contrast and you seek high contrast prints with a photojournalistic look: they used to print those ones small... It works that way...
Lachlan is right about stand offering you nothing.
Have fun!