FWIW (not much): I've tried a few rounds with Bergger film. I would like the fact that Bergger is available in 5X7 as a normal stock; however, it seems routinely out-of-stock in the more economical quantities,. Like their Berspeed developer much better on a Jobo processor. Now more focused on FP4+ and Delta400, but may have another go at HP5, too. New copy of Developer Cookbook likens current TRI-X more to Plus-X, but I don't think TRI-X 320 is the same animal.