by the way it is Miele!
When you compare a Miele with anything else in somewhere like Comet or Currys, there is simply no comparison. Everything about a Miele washing machine as with every other appliance they make, oozes quality and it is clearly seen. They are the only brand left that sot of makes their own products and still produce every single product in Germany, unlike other brands moving production to China or Poland.
Expensive? Maybe, but they are an investment, and can actually be called a washing machine rather than a tin can.
And in answer to your motor question, the Miele motors are DC rather than AC so they are much quieter. The higher end motors are induction and brushless but are belt driven, beltless motors are a recipe for disaster. It is also worth pointing out, that Miele also make their own electronics and motors in house.