Guess it depends on the wife
In our case the wife likes all options available to her !
We have a built in vacuum, but we also got the Dyson as an add on...
the wife uses both !
even though I have 'suggested' we not carry two and
that either one will do what the other does quite well
but I personally HATE the built in that jerks the hose out of my hand at the far reaches of the rv since I don't 'practice' vacuuming enough!