[celerrimus]

Well, from my European point of view, dishwashers are as good as 20 years ago. And we have rather strict energy/water norms. Normal program is quite long, like 2h50min, but you can get it to 1h30, and we have almost perfectly clean dishes - sometimes very small spots of retained/burnt residues remains they are dried before washing.

In my experience, foggy and spotted glass is result of too much shiner. Today almost or all dishwasher tabs have it inside, so you need to ignore error from dishwasher and put no additional shiner to the machine.