Of the 4 major variables we've all been discussing (film, film developer, paper, print developer), I think the film makes the least difference followed by the film developer. The paper makes the most difference followed by the choice of paper developer; specifically, amidol. I have relatively flat Polaroid negatives which print well on grade 3 Azo and I have utterly bulletproof ABC pyro negatives which, while difficult to print, can render beautiful prints when made on grade 2 Azo and developed with a water bath. And I have everything in between. Even my old foggy PMK negs print much better on Azo than on any other paper. If I'm ever forced to change anything, let it be the film first. Then ABC pyro. Then amidol (although at that point I'd consider giving up photography). If Azo goes I give up photography.