Colin
I actually do a regular job where the carpet keeps hold of bits - its a pain, even the client says so and they have - guess what - a Dyson.
However, with a Sebo (actually mine is a Karcher like the yellow one in Mike Hallidays video) it picks all up on the pull stroke.
Showed it in action to the client (husband on this occasion) and off he went to his computer and ordered a Felix off Ebay - he was so made up with the performance.