Our shelter also feeds Purina One as a base for the exact same reasons. We used to do Purina Dog/Cat Chow but we decided to "test the waters" and try asking the public for a food that was still widely available, but was a bit better quality. The community responded well, and while we still get some donations of Dog/Cat Chow, we've been fortunate enough that donations of Purina One have been so numerous that we have not actually had to buy any Purina One since we did the switch.
As far as canned food, we feed a wide variety, but most of it tends to be Fancy Feast or Friskies.
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