Suction efficiency but flawed

No complaints about the design and aesthetics.
I especially appreciate its light weight for mounting carefree stairs.
I was a little afraid of the small volume of the tank but in fact it allows a 130m2 house with no problem (house with lots of animals and therefore hair). The fact that it is empty clip over the trash particuièrement is significant and allows maintenance and hygiene at the top.
I am disappointed, however, the noise, so much noise that the suction is classic but a little background noise at the brush-like squeal depending on the brush position.
And the biggest problem is the small round of the bracket on the body of the vacuum cleaner ... who broke the second use ... damage.