Even immediately after the construction, I realized that the rest a little "game" and had quietly cracked, but compared to the previous chair was not a problem. Now after one month I have to say it is not better. The rest creaks and cracks become just as cheerful as that of the old chair. Thus the main reason for the change to the new chair has unfortunately already expired for me.
But there are also positive sides: The seat cushion affects me very solid and I do not feel "to sit on the chipboard" as someone wrote here. A seat cushion is in my opinion not necessary because here really quality comes to the fore. Furthermore, are the seat piece as opposed to the rest no noise from. I can sit stress me so and will then only disturbed when leaning back through the crack. Next time I'll probably double the money invested again and about 150-200 euros to spend and then hopefully have a noiseless chair.