i have a rule i try to stick to, if it's advertised on t.v it's probably no good. dyson are constantly advertising yet i've never seen an advert for miele and they are selling well.
i use miele in some locations as i like how they can be turned right down or right up and have a really good turbo brush. they also have all tools stored onboard tucked away, have quick cable rewind, perfect for stairs as they can be put on a small step and left, and also very easy to carry around
however they are expensive (espcially the bags
) and probably not as indestructable as others.