The mixer is heavy but nothing exceptional for a product of this range.
The temperature regulation is very fast, no complaints on that side.
This version (visible on the German site Grohe) differs from the French version by adding a small room that has just been inserted into the left handle to the limited temperature at about 43 degrees. Nice if you have children to avoid any risk of burns. That's the only difference.
I still blame the lack of a marked position on the right handle position between the shower and the bath position. Returning from the shower position we tend to go too high. And if you ask the head with the pipe you may press the handle. Finally it is a habit.
Otherwise debit side, the economy stop does not give me enough speed, it is necessary that I always pass beyond.
In short a good product and I would tell you my feelings after several months of use.