High-Efficiency Particulate Air is a standard of air filter. By this standard an air filter must remove 99.97% of all particles greater than 0.3 micrometre from the air that passes through.
Dyson DC59 Animal
When covered under the manufacturer’s warranty it is possible to get a replacement in the case of a malfunction.
Miele S 8990 UniQ
There is no need to buy bags.
A long cable ensures more freedom of movement.
Devices with wider brush can clean your floors in less time.
The cord automatically winds up, reducing hassle with storage.
All extra tools are stored on/in the device itself. It's convenient to have all tools in one place as you don't have to find a place to store them and they are right there when you need them.
Devices with this form are lighter and take up less space. They are ideal for cleaning stairs, hard floors, upholstery and for cleaning in between furniture. They are generally more affordable.