I have been using 4x5 & 8x10 arista for some time, I have found it to be identical to Ilford products for all intents and purposes, and I have processed the two films(Arista and Ilford) together using same times etc. I have never had any quality problems with the Arista film. If you go to the Ilford Web site you will find they are willing to make film on an OEM basis. http://www.ilford.com/html/us_english/prod_html/custommfg/custommfg.ht ml(posted 8838 days ago)It ultimately does not matter who makes the film, quality is good, and has been consistent over the years.