Bought this to replace an old Vax model that had died and I must say this is far more powerful, even on the low setting it picks up much better and the battery lasts long enough to do my whole house in one go.  The whole thing comes apart really easily and being able to rinse the dust collector and filters under the tap makes it so easy to clean.  The extendable thin attachment means I can get behind the radiators much more easily.  For the price it's fantastic value.