Hello again. As detailed in my post about Catlab 80, I am also testing what to replace my UFX materials with as I see that vendor "seemingly" closing down supply lines into a product I have used over the last 5 years or so. Details on the Catlab 80 material remain the same from the post. It will replace any Pan F 50 stocks. I did a number of test (2x each emulsion) on the Arista.EDU films and here are some of my observations. EDU 100: 120 size. Multi emulsion defects (voids, tares, and worst of all "Cottage Cheese" thru out the entire emulsions. Totally unworkable. Moderate film curling. 135.xx material: "Manageable" small hole defects (black dots). EDU 200: Both sizes show some very small holes, but it was necessary to enlarge the 120 negs well past 30x30. Excellent sharpness in both formats. 160asa speed both sizes with my Pyro staining developers. (Pyrocat HDC or Hypercat) EDU 400: 120 size: Excessive "Cottage Cheese" emulsion defects render any print larger that 8x8 with a strange look. 135.xx material: Almost defect free but a bit more on the grainy side than the current UFX400 material ------------------------- Final thoughts; The 120 EDU products in 100 speed has excessive problems in 120 and 35mm and will be omitted from further consideration in future work. The 135-xx, 400 material can be managed, so it will replace the 135-xx UFX film when needed. The EDU 200 materials, both sizes, will become "standards" for future work, as all tests yield a true asa rating of 160 with my meters.