I have a dyson (not an upright though) and it's great. Bagless and supposedly doesn't loose suction as the comparment fills with 'muck' (as other vacumes with bags do). Horrible site to see how much 'muck' is actually removed each time you vacume. Reccommended for allergy suffers and people with animals inside. Also reccommends to clean the filter every 6 months and it's as simple as removing this circle pad and giving it a good rinse and then letting it dry out. They are pricey but we got ours on interest free