With the tests that I ran with pyro and several different film types, I came up with almost the same results and opinion as John. If I had an extreme contrast situation and was using large negative material I might use the Pyro. But for a standard use developer Pyro would not be my first choice because of the sharpness and grain issues already mentioned. Photographers that I know that use Pyro on a regular basis seem more entranced with their negatives (which can look beautiful) then their prints.Let me also add another set of developers into the fray ( if you can get your hands on any) - Tetanol's Neo-Fin Red and Neo-fin Blue. Both show extremely high accutence without blocking up highlights.(posted 8938 days ago)