Well, seeing as Super XX was discontinued before I even got into photography, I can't make any direct comparisons, but for the last few weeks I have been experimenting with Bergger BPF 200. I've been shooting it at 100 and developing in PMK for 11 minutes with very nice results. In PMK, image stain is very good and general stain is almost nonexistant. So far, all the negatives I've shot with the stuff are beautiful (aside from the few that I screwed up the other day- stupid mistake on my part). Highlight and shadow information has been exactly where I've wanted it to be and the midtones are absolutely gorgeous. Haven't done much n+ or n- with it yet, so I can't comment on how well it responds to zone system controls. However, my initial impression of the film is good.