We are very satisfied with the machine. Price-performance ratio is very good. The machine is small and can be stored easily. The handling is very simple - you do not even need to heat the milk: - give simple rooms warm milk into the container, and (also given at room temperature) to give two teaspoons of yogurt to mix well and leave the machine turned on in peace. After eight hours the yoghurt is ready. If you want to have a little stronger the yogurt, you could use 6% s milk and after the yogurt has cooled, cut a little from the yogurt and the fluid that accumulates after a few hours in there, throw away: So you have a thicker and firmer yoghurt , We have the machine only recently and can not say anything yet about the longevity of the device, but otherwise the machine is recommended.