I recently made a thread looking for feed suggestions, but it didn’t get a lot of replies. I think many people have locally provided foods that you can’t get in places like TSC.
Here’s my thread with my feelings on the ones I’ve tried, as well as some alternatives I looked at. I have just ordered the Hudson feeds game bird feed, which is one of the link’s in that post, it hasn’t arrived so I don’t know how it is yet.
https://www.backyardchickens.com/threads/opinions-for-new-feed.1395679/
I don’t feel Purina makes quality food, and I just don’t like them from experiences with their various foods in the past so I don’t consider them an option for me so I have no idea if it is better or worse than the other brand you mentioned.