I've begun shooting some color again and have shot a few rolls of 120 Portra 400 and a roll today of Ektar 100. I know that the Portra films are excellent and always deliver stunning results. However, I have never used the new Ektar 100 before. From reading reviews on the internet it seems to be a "love, hate" film. So what differences besides speed can I expect in Ektar 100 vs. Portra 160 or 400?