The quality is good, the wall mounting is good and solid. All in all, there is nothing to complain about for the price. The only difference from the much more expensive products, which comes to mind is the non-existent here air injection into the shower spray to get an even softer water jet. Mir is the way it is soft enough, the water rolls not on the skin but wetted wonderful.
The greatest disadvantage is our now increased water consumption! ;-) But there still remains a little air until the additional water costs at the level of the more expensive shower systems.