My girls tried the Fromm CHicken but they didn't like it and the kibbles were too large. We didn't try the duck since my girls hate duck in any shape or form. The only food i could get them to eat is this Life's Abundance. It has the small kibbles and they LOVE it. I have never had a problem with them eating it. I think the RC has corn in there and that can cause allergies and is mainly used as a filler with no nutritional value.
I have free samples if you would like to try it out the LIfe's Abundance.