I think that most grocery store breads, even those with some whole grain as the first ingredient, are not that good. One example is Bakers Inn. I bought some once in a pinch, and it is as soft and doughy as many white breads. I couldn't stand that, so didn't eat much. I kind of forgot about it in the fridge. 4 months later, I finally decided to toss it out, and was expecting a green fuzzy mess (as that's what happens to 'real' bread after that long) but there was no mold to be seen, The bread was just a bit dried up. If something can't support microbial life, how can it support human life?
The best breads, IMO, are whole SPROUTED grain breads which contain only ingredients you can understand and find on your own and are not just wheat. They are usually found in helth food stores.
Some stores like Whole Foods, etc., might have some good breads. Those that have primarily whole grains as first incredients (ideally, with no 'wheat flour" or other refined grains).
FYI: "Wheat flour" is not a whole grain. "WHOLE wheat flour" IS a whole grain.