Dyson vacuum cleaners. They may be great if you live in a pristine, lovely house - but when it's an old house and you add 4 cats, a dog and 2 children it's a useless piece of c**p where the cleaning head needs to be de-clogged every 10 minutes. And you almost need to be an engineer to disassemble, clean and reassemble it. I hate that f*****g piece of trash and am very, very sorry that I sold my reliable old Hoover. I am positive that Dyson and whoever else was involved in creating this masterpiece has never actually had to clean a house. Sucking up pieces of styrofoam at the testing clinics is not a real world example.