The Magma infrared heating has the advantage that it is absolutely normal. No noise, no smell, no air movement, which is a huge plus for me. It is very shallow (about the size of a checkerboard) and fits into any corner. So you can always find a place, even in very tight, cluttered spaces.
Small disadvantage is of course the warm-up time, depending on room size and ambient temperature I guess about 20 - 40 minutes until the entire room (if on outdoor temperature previously) has set the heat. For me, that's OK, the heating is to maintain over a long period a room exactly on temperature, which makes them very good. These 400Watt heating is suitable only for smaller spaces, 5m² - 10m².
I'm very satisfied with the Magma Heating, they would buy again at any time.