Whats the best hoover / vacuum to buy for under �100?

Hi there, im hoping to buy a hoover from Argos for under �100, im on their website but there is tons to choose from, anyone care to have a browse around argos and suggest a one for me please? ive got carpet and hard flooring throughout the house. This is my first house... so first hoover! :-) Cheers all. PS reason for Argos is becuase there is one right near my house,