We're using Purina Beyond Simply Grain Free now. She likes it and the supply is reliable. She got about some dry (Purina ProPlan) before, maybe 1/4.
It's not like she was constantly sick, just very random, but it went from once a week or so on the wet/dry mix to maybe only once or twice total on the new dry-only. I suspect it's mostly just because she eats the dry stuff slower.