Well said Eurekaprince!
The best option is to go to a seller's shop where you can try out both the Sebo and Miele vacuums. Don't go by what people say because powerhead attached canister vacs are expensive and if you have had problems with your previous model, try and find the pros and cons yourself, especially if the same problems are likely to occur with the next purchase.
Personally, although I don't like my Sebo K3 Premium because the hose is short and the older ET-H floor head is heavier, the K3 Vulcano and latest bigger S5-sized Sebo D4 are better because they have the longer 2.1 metre hose and the Felix ET-1 floor head that is more practical than the auto-adjusting ET-H. But again, you really have to be able to test these vacuums before you decide.