I buy whatever is reasonably priced closest to me, since I have to carry it home (and I’m never buying more than a 5lb bag for many reasons, including this one).
I think you can definitely tell the difference for something like bread – for eg I ordered Amazon’s Happy Belly AP during the pandemic and it was clearly high protein based on the gluten development. So I had to adjust it down for cake, where I didn’t want that much gluten.
