"The World's best selling stairlift" that was the claim of Acorn Stairlifts during a recent advertising campaign. Not so, said Stannah Stairlifts, who challenged Acorn's advert and complained to the Advertising Standards Authority. The following link shows the ASA's conclusions. Stannah versus Acorn.
Mind you, Stannah have also had some of their adverts challenged by competitors. Minivator Ltd challenged a claim in Stannah's advertising that they were "unbeatable on bends" the ASA agreed with Minivator. Click on the following link to read their verdict Minivator versus Stannah.
The moral of the story? Take the claims of stairlift advertisers with a large pinch of salt. If you are considering getting a quote for a stair lift then make sure you contact an independent supplier as well as the manufacturers.