So I'm just starting out in 4x5. At the moment I'm shooting Kodalith at ISO 12 and developing by inspection in HC-110 1:100 (time usually comes out between 9 and 12 minutes depending on density). Now I have a stash of Super XX in 4x5 that I'm saving for a rainy day when I'm more practiced at stand development. I'm going to give a try of the Chamlee method of DBI under green light when I feel comfortable enough to develop the stuff. In the meantime, I would like to practice the technique, and was hoping one of you who's been around long enough to have used Super XX often could recommend another film with similar characteristics that I might practice on. I've heard that Bergger in pyro will exhibit a similar curve during development. Any advice would be appreciated.