We have been using vacuum cleaners for a long time, and we know their main purpose is to get rid of dust. At first glance, they seem to do it the same way, but in fact, different machines do it differently. Modern technology has changed the quality of their work for the better. Think of how vacuum cleaners looked twenty years ago, and look at today's models: they're lighter, more economical, and do a much better job.
And as far as compact vacuum cleaners go, there's quite a lot of choice. I chose Dyson V11 vs V15 because I have used this company for a long time. Still, other brands also have many interesting options.