I’m a fan of the Miele canisters. I’ve not come across a Miele appliance that’s not fantastic. I’m not sure I trust the battery vacuums, but then, that opinion isn’t limited to just Miele. Bags are better than bag less, unless you’ve pets and piles of fur.
their power washers used to be good, and they are so ubiquitous that the name turned into a verb for powerwashing here in Germany. But the last few years a lot of models have more an more plastic parts (that used to be brass) so they are not great anymore and break down much faster.
We switched to a Nilfisk now.
Pneumatic International i.e. the people who make Henry Hoover. You know the ones that are built like tanks that every cleaning service used because they're so reliable and last forever.
I believe they've also made a handheld one now.
Avoid Dyson, because they're overpriced, the build quality is terrible now, and Dyson is a Brexitier and Trump supporter.
If you want bang for buck (we need a euro saying for this, effective euros?) I can recommend Inventum from the Netherlands. If I need household appliances they're usually the first one I check for country pride reasons.
I have a Clas Ohlson (a Swedish dry-goods chain, operating in Scandinavia, Germany and formerly the UK) store-brand vacuum. They’re inexpensive and reliable.