We have the kettle now have 2 months in operation. To boil water is nice because when cooking the air bubbles are illuminated in blue, what looks good. The water heats up quickly, there is no water gushes out from the boiler until the boiler shuts down (we had with other stoves with other cap-structures) and the lid pops slightly on click of a button. The water also does not come directly into contact with plastic (only the cover is made of plastic). So overall nice design and good handling.
However, if you, like us, very hard water does, then tarnishes a glass, ie it is a layer of lime from (like a steel maker also) that gives the stove a little unaesthetic appearance and can not be the inside of the digester so easy to clean, as in a purely cylindrical stainless steel boiler, because the lid opening is narrower and longer edges has. With a cheap vinegar can also be easy to clean lime deposits again.
