I got kind of put off Hoover when the last vacuum cleaner I bought from them had a bunch of plastic knobs that all broke off within a month. They were critical to the operation of the unit. I traded it in at Costco for a Bissel vacuum cleaner as well.
All plastic knobs on my Hoover have remained where they were intended to be, but quality may have gone south in the years since. Mine was US built, though doubtless of Chinese parts.