Bose. Bang & Olufsen.
My point being, I don't think the comparison is fair. B&O used to be something. I don't think Dyson ever was.
https://en.wikipedia.org/wiki/Vacuum_cleaner#Cyclonic
They marketed a portable vacuum that doesn't use a bag or filter as the first dirt separation stage.
[0] to the point of causing electronicians headaches because the technology used was too peculiar