Well, another nice mess you got us into Andy! Just kidding of course and job well done. As for P30? I do like the rendering the best, but of the three films Delta 400 would be my pick. I like the extra few stops of speed and it would allow me to filter for a darker red simulation. It would also still be faster than P30. Of course 95% of my film work is with medium format, which lets me get away with faster films compared to 35mm.
Most average folks and not us "Photo crazy folks" would look at this comparison and would know only two things about the color of that Merc 1) It's not black. 2) It is not white. P30 does look like a very good product, but not something I'm going to go to for the majority of anything I do. Different yes! Better???