Practical Photography had an article about the quality of various films in various developers. Delta films in Rodinal didn't fare very well; they were much better developed in ID-11 or Ilfotec DD-X. (XTOL wasn't tested, unfortunately.) I realize this was a one-shot deal but you might want to look at a developer like DD-X for push processing, as it's especially good for it.(posted 8961 days ago)