I’d recommend a Kranzle 1152 TST, if you want quality. A Kaercher doesn’t even compare, but it is sadly reflected in the price.
That said: i’ve been through multiple Kaerchers in my life, the Kranzle will outlive me. And my (non-existent) son, too, probably.
Prior: SEAT Ateca Xcellence Lux 1.5 TSI DSG MY19, VW Golf GTE PHEV DSG MY23
Current: Hyundai Ioniq 6 Ultimate
Next: we'll see what's available in 2028.