Hello everyone, super post. I just rebuilt the shower column. I ended with Olliwon on amazon as it actually had some metal in it. So far so good. Most important could remove the flow reducer meaning actually rinses our shampoo. I bought grohe for kitchen and it’s good although as said already on the premium price side. That being said I fixed the old tap with a part ordered from Italy for 10€. So if anyone wants a sensor function kitchen sink Italian tap let me know.