After I read the reviews here, I thought, an attempt is worth it.
Behold: Today I washed the car my wife, dried with the microfibre cloth, and the result was amazing!
No residues in the paint and even the wheels looked great.
FYI: I have washed ahead with a Gardena washing brush and related soap pins the car.
A moment later I have my car even washed and dried, and once again a flawless result. The microfibre cloth has 2 cars completely "abgeledert" and even after the last sweep over the paint no water remains in the form of ugly spots were recognizable.
I am thrilled and therefore give it 5 stars. The price is indeed tight, but it's worth definitely!