The huge irony with SEBO is that they have secured worldwide sales of their commercial vacuums before developing the domestic X model. Like every other brand, SEBO also used components from the previous to build the next and so on.
But the difference is, that unlike Hoover Europe, SEBO's parts are largely always available for the X series. I wish I could have got the same kind of widespread availability on other brands' parts - Hoover for example where brush rolls on certain Turbopower uprights are no longer available. The casings, yes, but not the entire brush roll. And sometimes it doesn't feel as good when using a second hand one compared to a genuine new part in a bag ready to go. It's not just Hoover, but other brands that suffer from this too.
One has to remember that though most brands are not commercially based, perhaps there's something there in having commercial links to allow almost lifetime parts availability - same with Numatic infact!