Bosch BGS21X320 vs Philips 2000 Series XB212509. Test with apron and nightgown. clean with me

Power comparison of Bosch BGS21X320 bagless vacuum cleaners versus Philips 2000 series XB2125/09.
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What can not be vacuumed with a vacuum cleaner?
Ash, sawdust, and concrete dust contain such fine dust particles that even a small amount of them will completely clog the filters of the vacuum cleaner and impair suction.

What is the difference between a vacuum cleaner with a bag and without a bag?
suction power: air passes directly through the bag, so the vacuum cleaner cleans better; devices with bags are quieter: the bag plays the role of an additional noise absorber, cyclone vacuum cleaners, as a rule, are noisier; the price of such vacuum cleaners is lower than for cyclones and water filters.