1) High suction power
2) Design
Negative
1) device we perceive loud as above average
2) to be emptied a significantly small volume of dirt container (must already 1.5 Saugdurchgängen)
3) The drain is a disaster (The lid does not work well enough, and all the dust / dreckt fully. Animal hairs remain inside and you need a long flat bar, so you get the tank almost completely empty! The dust settles then the outer housing from and you can be sure that you would collect dirt and dirty hands (and more) has followed.
4) Because of point 3) no allergies should drain the appliance.
Conclusion
Beautiful idea of a bagless vacuum cleaner, but with this unit we decide against it and unfortunately quite disappointed! That we had not introduced at such a price.
We are the suckers sell well below the original price again!