To be honest,
That Dc41 MK2 has incredible pickup performance, and according to some reviewers on YouTube at least, the X series performance isn't as good as a sebo with an ET-1 powerhead.
The Dyson weakness is the brush roll with the 1 inch blindspot in the cleaning path, but that design is about 9 years old now and has since been replaced in markets outside of the US at least.
You guys really need to try a Dyson built during the last decade, and not judge your exceptions based off ones you may have used in the early 2000s. They, like others, have improved. Sebo's with the old powerhead weren't as good at deep cleaning as the newer ones. I know, our family have owned Sebo's since the 80s lol.
Sebo really need to re-design that X series. Spending nearly £300+ on a vacuum with a hose that doesn't reach to the top of the stairs and no brush-roll control for hard floors isn't really acceptable now. You can buy a Small Ball 2 for £200 in the UK now, with a 5 year guarantee. Who would have thought Dyson's are less expensive than bagged German machines but it is 2021 now, nothing is the same.