You can review the foods at:www.dogfoodanalysis.com to learn which is rated best.

Taste of the Wild has grain free formulas and I used that successfully for over 3 years. I only stopped using it when a problem at the manufacturing plant ended in the plant being completely shut down by the government for 3 months and the food was not available here, so I switched to Earthborn Holistics, which also has several grain free formulas.

Since bichons must have grain free foods, TOTW is the only one of those you listed which I would suggest you use.