Is the Arista EDU Ultra 200 the same as the 100 variety? How about the 400 version? I really like the 100, but sometimes need a faster film. Was looking at some of the 100 that I souped in Microdol-X (you can shoot it at 100 or even 200 w/ this developer full strength) and comparing it too my usual Tri-X in D76, and actually prefer the Arista. It's a LOT sharper too.