Mark - I belive you are incorrect about why Super-XX was discontinued. After all,
it was the preferred black-and-white film of most photography schools for many years due to ease of use. But it was quite grainy, and as smaller formats gained popularity, was pushed off its pedestal by the newer T-grained emulsions. It was also a very proprietary thing requiring a tradition of highly skilled personnel and not just a formula. Nor did all three separations match well. The "blue bump" of the blue separation being unable to rise to the same contrast level as the red and green separations was infamous among dye transfer printers. Bergger 200 has the same problem. In fact, both 100TMax and 400TMax are far more cooperative in this respect, and in my opinion are actually better for color separations than Super-XX ever was, though there's a new learning curve involved with the developers. I don't
know about schools everywhere, of course, but here at UCB, 400TMax is the new
"standard" sheet film, with reliability and great versatility. (And yes, there are still
plenty of students interested in view cameras.)