My new(2 years old) Bosch dishwasher cleans much better than any other dishwasher I used in my life. I'm like 60% sure that the buttons on the front don't actually do anything, because it cleans equally well in all modes, from ECO(50C) to Heavy Load(70C). Yeah the eco mode takes 3 hours by default, but press "Vario Speed" and is done in 1:05h with the exact same result.