Aerus/Electrolux
Get an Aerus or Electrolux. New are expensive but plenty of used ones ion eBay. If you want new, then sell the Miele on eBay to recover that cost.
Never had an issue with cleaning anything with these machines for all my life and I cleaned for a lady who had 3 cats and a shedding dog and suede couches And tweed fabric chairs that were like pet hair magnets. Durable, powerful, yet gentle on upholstery and carpet as the brush bristles are high quality, unlike cheap stiff plastic bristles that do clean ...but also damage the material on other brands.
Just my opinion.
Jon