I agree with Pingu but can't afford the faceliftcc44'. (£900?)
An Xtel gass firbre 17' is lighter and better for ground and 1st floor, and costs £65 from Gardiners.
You have to buy several poles and make your own mistakes but the Xtel is superb, and it is cheap.
Get flocked vikan and unflocked rectangular brushes- you will need a min of two flocked with fan jets.