He was not impressed with dysons: http://www.reddit.com/r/IAmA/comments/1pe2bd/iama_vacuum_rep...
I have to say in my experience, having had 2 dysons - they both broke within 2 years.
Of course the plural of anecdote is not data.
The only things that broke were simple to replace (and pretty cheap to be fair) parts like the hose which split because I over stretch it one too many times. Can't really fault it for that though.
I have had wood floors everywhere now so make do with a dirt cheap hoover but if I had carpets I would buy another Dyson without question. It did such a fantastic job and maintenance was as easy could be.
Just in the past couple of days he started a YouTube channel and posted his first video: https://www.youtube.com/watch?v=yEJSACjCL2g