The suction convinced with the result, I am more than satisfied.
But what bothers me is the sound of the vacuum cleaner. These are best described as the loud, high whine. The threshold of pain is, at least for me, already exceeded. It may be that other ears perceive it differently, but I'm happy if I can turn off the vacuum cleaner again (and then have no headache).
Hence the Tip: If possible retest if the noise level is tolerable.