I tested him up on carpet on all common floor coverings and it sucks even effortlessly to the long hair of the woman, which was criticized here the one time or another.
Therefore, you can save the money for a Dyson my opinion and and grab a Dirt Devil, who have more power and so not so loud.
Only the fear was great that he so screams as the two Dyson, I have tested, but no, it sounds like a normal vacuum cleaner.
So if you think about a bagless vacuum cleaner, with Dirt Devil, no matter which model, very good advice.