After return of the first device, I am very satisfied. The first unit (hot air) had too much top heat, so that the rolls were almost burned. The exchange and processing by Amazone is not improving. The new unit had already arrived before I had the old returned. So "seamless" transition. With the new device, I am very satisfied. Everything works smoothly. Unfortunately 1 star deduction, because the mirror glass is very intense cleaning or the unit looks unsightly fingerprints or plaster strips. I had bought the device because of the hot air oven and the way because of the microwave. Now the situation is reversed, the microwave comes regularly to use. This really is excellent (fast, clean and just the vegetables with natural flavor). So highly recommended!