7/11 is mostly a franchise setup in Japan, so things aren't completely uniform. The 7/11 combini I've been visiting over the years doesn't suffer from the empty bread syndrome. This isn't a big city, it's almost rural, don't know if that matters too. When that's said, the sandwiches they prepare in the bread shop in the nearby shopping mall is better, if anything there's too much filling. Anyway, it can never be truly good because it's all 100% white bread wherever you buy it.