I would say they would be close to the same, with the edge going to the homebrew shops, if you are using extract. My guess is that the recipes created by the homebrew shops would have more thought put into them, and probably fresher ingredients. The yeast will make a difference too, since I think BB comes with dry yeast that has been sitting at room temp for who knows how long. Either way, I would support one of the brew stores before buying a commercial kit, but that's just me. Those are some of the big names on your list, I would also take a look at Rebel Brewer. Like I said though, in terms of quality, I don't know that there would be a drastic difference, but I'd support the homebrew stores.