After our old shower broke down, we opted for a cheap Grohe hand shower. The processing works well and also children's hands get away with it along well (not too much grip, not too hard). We have bought the version with the flow limiter to 5.8 liters: the works so far though, the beam is thus but quite gently. There are so handheld showerheads, which could cut granite or dissolve large Demos: So that goes with that then certainly not. The beam is reminiscent of the description accordingly really more like rain.
The difference between Rain and RainO2 is actually only that RainO2 is louder due to the air mixture. Otherwise, I see 0815-customer while showering no difference (what radiant intensity, etc. concerns).