Problem is, aside from the rain showers, which are, I believe, still all metal, most of their actual spray heads are indeed chromed plastic now. High grade reinforced chromed plastic, but plastic nonetheless. Its called Grohe Starlite, if I remember correctly. Honestly, it lasts longer and is easier to clean. It makes much more sense to have all the interior waterways done in plastic, since it doesn't corrode. They used to be all brass - but its just too expensive for something that most people will never notice. How often do you take off your showerhead and weigh it? Not very often. Not to mention that buying a showerhead for $250- $600 bucks is a little like spending $900 on sneakers. Nothing wrong with a little luxury - but seriously... That being said, Grohe is nice. If you like the design, and are willing to pay for it - by all means, I won't stop you. I for one like the Grohe Rainshower system. We have this one installed: Rainshower It gives quite sufficient waterflow. I believe that one of the main factors is the capacity of your boiler, i.e how much hot water throughput capacity, to be able to drive the shower. Tokyo, I believe that the Grohe is brass.