I think the new EU reg is a good thing, it will force lazy manufacturers to do some proper R&D instead of a quick simple fix. It amazes me that people do not understand the vacuum principle. As someone with specialist knowledge, I can tell you the wattage HAS NO bearing on how well it performs. The fan draws air from the dust chamber, and the difference in pressure, forces air to fill the void, in terms creating suction. The factors that affect how well it works, are: an aerodynamic fan, tight sealing, a short airpath and removal of unnecessary tubes and angles which slow air down.
Agitation also cleans carpets, cylinders don't remove the grit embedded in the pile.
An electric oil heater is rated at 2kw and so are these vacuums, so have a think of the efficiency of that. Exactly, high wattage cleaners don't pick up more they simply waste electricity turning it into heat. The heat causes the motor to burn out, usually after a few months, I see it happen all the time.
So, in essence, if you think high wattage is better and have been panic buying for no reason, it just goes to show the gullibility and stupidity of the nation. Round of applause!